Justice RICE delivers the Opinion of the Court.

Plaintiffs-appellees challenge the constitutionality of Amendment 54, now codified as parts of article XXVIII of the Colorado Constitution. Voters narrowly passed Amendment 54 in November 2008, and it became operational on December 31st of that year. Colo. Const. art XXVIII, § 13. Designed to eliminate "a presumption of impropriety between contributions to any campaign and sole source government contracts," the Amendment prohibits and imposes severe penalties on campaign donations from those holding sole source contracts to "any candidate for any elected office of the state or any of its political subdivisions." Colo. Const. art XXVIII, § 15.

The plaintiffs allege a multitude of constitutional inadequacies that, in total, would render all of Amendment 54 invalid. The plaintiffs range from unions impacted by the Amendment to the Children's Hospital to the chief officer of the Denver Center for the Performing Arts. Although some of the plaintiffs' arguments are meritless, we agree that many of Amendment 54's component parts are unconstitutionally vague, disproportional, overbroad, or otherwise infirm. Indeed, we find the Amendment's deficiencies so pervasive that we must nullify the Amendment in its entirety, leaving article XXVIII of the Colorado Constitution as it was prior to November 2008.

I. Facts and Procedural History A. Overview of Amendment 54

We begin by outlining Amendment 54's additions to the Campaign and Political Finance Article of the Colorado Constitution. Section 15 includes both the stated purpose of the Amendment and its principal rule — a complete prohibition of all contributions by contract holders and contributions made on behalf of contract holders and their immediate family, during the contract and for two years thereafter, to any candidate for any office or any political party. Colo. Const. art. XXVIII, § 15. In its entirety, this key provision reads:

Because of a presumption of impropriety between contributions to any campaign and sole source government contracts, contract holders shall contractually agree, for the duration of the contract and for two years thereafter, to cease making, causing to be made, or inducing by any means, a contribution, directly or indirectly, on behalf of the contract holder or on behalf of his or her immediate family member and for the benefit of any political party or for the benefit of any candidate for any elected office of the state or any of its political subdivisions.

Id. The drafters' language combines into a single sentence the Amendment's purpose, duration, and ban on contributions, with language describing its application to various political actors, contract holders, and contract holders' families.

By comparison, section 16 is more limited. It describes a publication mechanism designed to inform the public of all sole source government contracts and their contents. First, it instructs the executive director of the department of personnel to "publish and maintain a summary of each sole source government contract issued." Colo. Const. art. XXVIII, § 16. Next, it requires all holders of sole source contracts to provide the executive director of the department of personnel a "Government Contract Summary," including the names and addresses of all contracting parties, the nature of the contract, the estimated contract amount, the dates of the contract period, and a disclosure of "other information as determined by the executive director of the department of personnel." Id. Finally, it empowers the executive director to promulgate rules to facilitate enforcement of these requirements. Id.

Section 17 is better understood as an amalgamation of five relatively unrelated subsections than as a single, cohesive constitutional provision. Subsection 1 begins by incorporating section 15 into all future government contracts. Colo. Const. art. XXVIII, § 17( 1). It then turns to penalties, stating that:

Any person who intentionally accepts contributions on behalf of a candidate committee, political committee, small donor committee, political party, or other entity, in violation of section 15 has engaged in corrupt misconduct and shall pay restitution to the general treasury of the contracting governmental entity to compensate the governmental entity for all costs and expenses associated with the breach, including costs and losses involved in securing a new contract if that becomes necessary.

Id. The subsection also extends liability to any bookkeeper for a contract holder and to any "person acting on behalf of the governmental entity" if that person "obtains knowledge" of a section 15 violation and "intentionally fails to notify" the appropriate government officer within ten days. Id.

Turning to the other parts of section 17, subsection 2 disqualifies "[a]ny person who makes or causes to be made any contribution intended to promote or influence the result of an election on a ballot issue" from holding a sole source contract related to that issue. Colo. Const. art. XXVIII, § 17( 2). Subsection 3 states that, "if a contract holder intentionally violates section 15 or section 17(2), as contractual damages that contract holder shall be ineligible to hold any sole source government contract, or public employment with the state or any of its political subdivisions, for three years." Colo. Const. art. XXVIII, § 17( 3). Subsection 4 penalizes any "knowing violation" of the Amendment by a government official with removal from office, disqualification from future office, and other "misconduct or malfeasance" consequences. Colo. Const. art. XXVIII, § 17( 4). Finally, subsection 5 gives standing to enforce the Amendment to any registered voter of the state. Colo. Const. art. XXVIII, § 17( 5).

Next, section 13 in Amendment 54 replaces the prior version of section 13 in article XXVIII and amends the effective date of the new law. Colo. Const. art. XXVIII, § 13. It maintains that the Campaign and Political Finance Act remains in effect as it was on December 6, 2002, with the new Amendment 54 provisions taking effect on December 31, 2008. Id. The section, both pre- and post-Amendment 54, concludes with: "Legislation may be enacted to facilitate its operations, but in no way limiting or restricting the provisions of this article or the powers herein granted." Id.; Colo. Const. art. XXVIII, § 13 (2003).

Finally, Amendment 54 adds four new definitions to the existing definitions in article XXVIII, section 2. The first states:

'Contract holder' means any non-governmental party to a sole source government contract, including persons that control ten percent or more shares or interest in that party; or that party's officers, directors or trustees; or, in the case of collective bargaining agreements, the labor organization and any political committees created or controlled by the labor organization.

Colo. Const. art. XXVIII, § 2(4.5).

Amendment 54 broadly defines immediate family member to include "any spouse, child, spouse's child, son-in-law, daughter-in-law, parent, sibling, grandparent, grandchild, stepbrother, stepsister, stepparent, parent-in-law, brother-in-law, sister-in-law, aunt, niece, nephew, guardian, or domestic partner." Colo. Const. art. XXVIII, § 2(8.5).

Section 2(14.4) provides the crucial definition of sole source government contract that applies throughout the Amendment. Under Amendment 54, a sole source contract is "any government contract that does not use a public and competitive bidding process soliciting at least three bids prior to awarding the contract." Colo. Const. art. XXVIII, § 2(14.4). To be considered a sole source contract, the subsection requires that the cumulative value of all the holder's contracts with all government entities for that calendar year exceed $100,000, indexed to inflation. Id. The subsection further expands the definition of sole source contract to include collective bargaining agreements. In pertinent part:

A sole source government contract includes collective bargaining agreements with a labor organization representing employees, but not employment contracts with individual employees. Collective bargaining agreements qualify as sole source government contracts if the contract confers an exclusive representative status to bind all employees to accept the terms and conditions of the contract.

Id.

The final subsection provides an expansive definition of "state or any of its political subdivisions." Colo. Const. art. XXVIII, § 2(14.6). This phrase, which essentially delineates the scope of the Amendment, includes "the state of Colorado and its agencies or departments, as well as the political subdivisions within this state including counties, municipalities, school districts, special districts, and any public or quasi-public body that receives a majority of its funding from the taxpayers of the state of Colorado." Id.

Before proceeding, we emphasize the distinction between the new additions to article XXVIII of the Colorado Constitution and the provisions that existed prior to Amendment 54. The majority of article XXVIII, including the broad purpose statement in section 1 explaining why campaign finance laws are necessary, remains unaffected by the Amendment. The continued validity of these older provisions is not at issue. For this reason, we concern ourselves solely with those changes and additions wrought by Amendment 54.

B. Procedural Posture

This case represents the consolidation of two facial challenges filed shortly after the effective date of Amendment 54. The Ritchie plaintiffs filed a motion for a preliminary injunction on February 19, 2009, while the Dallman plaintiffs filed a motion for a preliminary injunction on March 10, 2009. Because both groups alleged similar constitutional deficiencies and sought to enjoin the entire Amendment, the trial court consolidated the cases.

Specifically, both groups argued that a preliminary injunction was necessary because Amendment 54 violated their First Amendment rights to free speech and free association. The Dallman plaintiffs, who represent organized labor, also alleged that Amendment 54 violated the single subject requirement, Colo. Const. art V, § 1(5.5), and that Amendment 54 unfairly singled out labor organizations holding public collective bargaining agreements, thereby violating their rights under the Equal Protection Clause of the Fourteenth Amendment.

At the preliminary injunction hearing, three witnesses testified for the plaintiffs: Daniel Ritchie, the chairman and CEO of the Denver Center for Performing Arts (DCPA) and board member of other nonprofit organizations; Robert Fitzgerald, an Aurora City Council member running for reelection; and David Clark, president of School District 14 Classroom Teachers Association (CTA).

Ritchie testified that he was the chancellor of the University of Denver for sixteen years. He stated that the University of Denver, through the graduate school of social work, has numerous contracts with governmental entities relating to welfare and child care. DCPA leases and rents property from Denver, Denver rents one floor of a building from DCPA, and Denver provides parking spaces for DCPA's use. Ritchie further testified that neither board members nor the DCPA itself profits from its contracts with Denver. Ritchie believed that a violation of Amendment 54 by the DCPA would end its existence and have a substantial detrimental effect on the City of Denver as well. Ritchie made numerous contributions to political campaigns prior to Amendment 54 but has since only contributed to federal campaigns.

Fitzgerald is a member of the Aurora City Council. He was originally appointed to the city council in 2004 and was seeking reelection in 2009. Fitzgerald testified that he expected the election to be highly competitive and speculated that he would need to raise about $50,000 for his campaign to be effective. He declined to let a friend work as his treasurer because he was afraid of subjecting another individual to liability under Amendment 54. Fitzgerald testified that he was having trouble raising funds, claiming that many potential contributors were unsure of Amendment 54's reach and would not contribute until this case was decided. He also testified that he would have taken contributions from union political action committees (PACs), but, under Amendment 54, union PACs are prohibited from contributing to his campaign. Fitzgerald was also unsure of which specific individuals are barred from contributing, mainly due to the incomplete state database of sole source government contractors.

Clark is the president of a labor organization, the CTA, which has a collective bargaining agreement with the state. Clark testified that, because of its collective bargaining agreement, the CTA was a sole source government contractor under Amendment 54. The CTA formed a PAC to support candidates for the school board through endorsements and financial contributions. Clark testified that the PAC does not contribute to any candidates for office other than school board members. Prior to Amendment 54, individual union members contributed funds to the PAC that were then used to support favored candidates. Clark testified that the CTA wanted to contribute to school board candidates in November of 2009, but Amendment 54 prohibited any contribution from the PAC.

On August 12, 2009, the trial court issued a preliminary injunction enjoining the enforcement of all but section 16 of Amendment 54. The trial court found that the Amendment facially violated "the rights of free speech and association guaranteed by the First Amendment to the Constitution of the United States." The trial court's primary reason for striking the Amendment rested in its overbreadth, which "permeate[d] the [A]mendment" but was especially troublesome in sections 2(8.5), 15, 17(1), and 17(4). The trial court also found several subsections void for vagueness and struck down section 17(2)'s prohibition on contributing to ballot measures because it unconstitutionally chilled First Amendment rights. Regarding claims specific to the Dallman plaintiffs and labor unions, the trial court concluded that there was "simply no legitimate reason for the government to impose greater restrictions on the First Amendment interests of public sector unions." Consequently, it struck Amendment 54's labor organization provisions for violating the First and Fourteenth Amendments.

II. Standard of Review

The trial court rendered its findings through the lens of a preliminary injunction, structuring its written decision around the six elements a court must consider before issuing a preliminary injunction. See Rathke v. MacFarlane, 648 P.2d 648, 653-54 (Colo. 1982); Kourlis v. Dist. Ct., 930 P.2d 1329, 1335 (Colo. 1997). Usually, we review the grant or denial of injunctive relief for an abuse of discretion, deferring to the factual judgment of the trial court, Rathke, 648 P.2d at 653, but here we review this facial challenge de novo because "the issue being reviewed concerns only legal, rather than factual questions." State ex rel. Salazar v. Cash Now Store, Inc., 31 P.3d 161, 164 (Colo. 2001).

The first element of the preliminary injunction analysis, and the most important in the case at bar, is "a reasonable probability of success on the merits," which requires the court to substantively evaluate the issues as it would during trial. Rathke, 648 P.2d at 654. Thus, the vast majority of the trial court's decision and the sole issue raised on appeal concerns the merits of the case, which the trial court evaluated from the same perspective and with the same effect in the hearing as it would at trial. See C.R.C.P. 65(a)(2) (allowing consolidation of a preliminary injunction hearing with the actual trial and, if consolidation is not possible, directing that the hearing record become part of the trial record without repetition of the evidence).

We note that, while we review this appeal of the trial court's preliminary injunction according to the six Rathke elements, our substantive findings on the merits of the case would not differ if reviewed in the context of a permanent injunction. "The standard for a preliminary injunction is essentially the same as for a permanent injunction with the exception that the plaintiff must show a likelihood of success on the merits rather than actual success." Amoco Prod. Co. v. Vill. of Gambell, 480 U.S. 531, 546 n. 12, 107 S.Ct. 1396, 94 L.Ed.2d 542 (1987); see also City of Golden v. Simpson, 83 P.3d 87, 96 (Colo. 2004). Thus, while we review preliminary injunctions for likelihood of success on the merits and permanent injunctions for actual success on the merits, the legal criteria and analytical process are essentially the same. See C.R.C.P. 65(a)(2) (stating that, when the evidence admitted is identical, success on the merits is defined according to the issue's underlying legal rules).

We apply these basic rules to each of the different issues presented on appeal. Each constitutional challenge to Amendment 54 has its own unique analytical framework and corresponding standard of review. Therefore, we devote the following three sections to addressing each of the issues the plaintiffs present.

III. Contribution Limits under Buckley

We first consider whether Amendment 54's absolute ban on contributions from sole source contractors is constitutional under the First Amendment, which provides that the government "shall make no law . . . abridging the freedom of speech." U.S. Const. amend. I. We must examine Amendment 54's contribution ban using the United States Supreme Court's case law specific to this type of First Amendment restriction.

We begin by distinguishing contribution limits, at issue here, from expenditure limits. See Citizens United v. Fed. Election Comm'n, ___ U.S. ___, 130 S.Ct. 876, 908, ___ L.Ed.2d ___ (2010); McConnell v. Fed. Election Comm'n, 540 U.S. 93, 134-35, 124 S.Ct. 619, 157 L.Ed.2d 491 (2003) (overruled by Citizens United, 130 S.Ct. at 913, as applied to independent campaign expenditures but not as applied to campaign contributions). In this context, expenditures comprise money spent directly advocating for or against a particular issue or candidate. Citizens United, 130 S.Ct. at 910 ("By definition, an independent expenditure is political speech presented to the electorate that is not coordinated with a candidate."). Thus, expenditure limits are a direct restraint on an individual's ability to express his or her position and are subject to strict scrutiny. Id. at 908; Buckley, 424 U.S. at 44-45, 96 S.Ct. 612. Conversely, campaign contributions encompass money given to a candidate or party, who then determines how it will be spent. Contribution limits only implicate the right to associate and approve of another's message and, therefore, are subject to a lower standard of scrutiny, though the Supreme Court has still termed it an "exacting standard." Nixon v. Shrink Mo. Gov't PAC, 528 U.S. 377, 386-87, 120 S.Ct. 897, 145 L.Ed.2d 886 (2000). Moreover, expenditures and contributions differ in their potential for a corrupting influence. The opportunity for a quid pro quo arrangement is an inherent danger in contributions to candidates but not in independent expenditures.

The Supreme Court decision in Citizens United addressed only expenditure limits and disclosure requirements; thus, it does not control our analysis of Amendment 54's contribution limits. Citizens United, 130 S.Ct. at 909 ("Citizens United has not made direct contributions to candidates, and it has not suggested that the Court should reconsider whether contribution limits should be subjected to rigorous First Amendment scrutiny.").

In Buckley, the Supreme Court recognized that contribution limits "implicate fundamental First Amendment interests" — the freedoms of political expression and political association. 424 U.S. at 15, 23, 96 S.Ct. 612. Contribution limits, however, are unlike expenditure limits because they are not a direct restraint on speech. Id. at 21, 96 S.Ct. 612. This is because contribution limits only restrict a contributor's ability to financially support a candidate; they do not "infringe the contributor's freedom to discuss candidates and issues." Id. at 21, 96 S.Ct. 612. Therefore, such limits only marginally infringe protected speech under the First Amendment. Id. at 20, 96 S.Ct. 612.

More importantly, contribution limits also "impinge on protected associational freedoms." Id. at 21, 96 S.Ct. 612. Contribution limits restrict "one important means of associating with a candidate or committee, but leave the contributor free to become a member of any political association and to assist personally in the association's efforts on behalf of candidates." Id. at 22, 96 S.Ct. 612. This comparison of speech and association freedoms led the Supreme Court in Buckley to find that "the primary First Amendment problem raised by . . . contribution limitations is their restriction of one aspect of the contributor's freedom of political association." Id. at 24, 96 S.Ct. 612.

The Supreme Court in Buckley concluded that contribution limits are not subject to strict scrutiny but may violate the First Amendment if they are not closely drawn to match a sufficiently important government interest. Randall v. Sorrell, 548 U.S. 230, 247, 126 S.Ct. 2479, 165 L.Ed.2d 482 (2006) (quoting Buckley, 424 U.S. at 21, 24, 96 S.Ct. 612 (holding that a state must demonstrate "a sufficiently important interest and employ[] means closely drawn to avoid unnecessary abridgment of associational freedoms.")). We adopt the Buckley framework here.

Our first step is to determine whether Amendment 54's contribution limits are supported by a sufficiently important government interest. Id. As stated in Amendment 54 and in the 2008 State Ballot Information Booklet (Blue Book), the purpose of the Amendment is the prevention of an appearance of impropriety in awarding sole source government contracts. Prior to Amendment 54, the holder of a sole source contract could contribute to the campaign of a government official with discretion over awarding that contract, subject to existing contribution limits contained in article XXVIII of the Colorado Constitution. The State argues that the current system creates the opportunity for actual corruption in contract awards and, almost of equal importance, creates the public perception of quid pro quo arrangements between government officials and sole source contractors. The Supreme Court in Buckley held that both of these interests — preventing corruption and preventing the appearance of corruption — are sufficiently important to justify campaign contribution limits. 424 U.S. at 27, 96 S.Ct. 612. Therefore, the government interest in preventing the appearance impropriety is sufficiently important to justify some limits on campaign contributions. The appearance of impropriety, however, is not sufficient to justify any and all restrictions on First Amendment freedoms. At some point, the appearance of impropriety is simply too attenuated or hypothetical to justify the restriction, and this court is constitutionally required to intervene.

Because we find a sufficiently important government interest in this case, we must determine whether Amendment 54 is closely drawn to prevent impropriety or the appearance thereof. Id. at 24, 96 S.Ct. 612. The contribution limits at issue in Buckley were directed towards the problem of large campaign contributions and the effect they had in the electoral process. Id. at 28, 96 S.Ct. 612. That is not the focus here because campaign contribution limits in Colorado are already in place. Instead, Amendment 54 imposes an absolute ban on contributions from sole source contractors in addition to the preexisting contribution limits. The Amendment's contribution ban restricts not only the amount of permissible contributions, but also from whom contributions are allowed. An absolute ban is a serious impairment of protected First Amendment rights.

When reviewing Amendment 54's tailoring, we examine the proportionality of its restrictions to the government's interest. Randall, 548 U.S. at 249, 126 S.Ct. 2479. The Supreme Court has used several tools to gauge a statute's tailoring, including: (1) whether the limitation prevents candidates from amassing resources necessary to mount an effective campaign, Buckley, 424 U.S. at 21, 96 S.Ct. 612; (2) whether the statute is unconstitutionally overbroad in that it unreasonably stifles protected speech, McConnell, 540 U.S. at 231-32, 124 S.Ct. 619; and (3) whether the limits provide significant advantages for an incumbent, Randall, 548 U.S. at 248-49, 126 S.Ct. 2479. There is no allegation in this case that Amendment 54 advantages incumbents, and therefore, we only address the candidates' ability to amass resources and the plaintiffs' claims of overbreadth.

A. Ability to Amass Resources

When analyzing campaign contribution limits post- Buckley, the Supreme Court has consistently considered whether the law would have "any dramatic adverse effect on the funding of campaigns" and whether the limits prevent "candidates and political committees from amassing the resources necessary for effective advocacy." Randall, 548 U.S. at 247, 126 S.Ct. 2479. A contribution limit must "not undermine to any material degree the potential for robust and effective discussion of candidates and campaign issues by individual citizens, associations, the institutional press, candidates, and political parties." Buckley, 424 U.S. at 29, 96 S.Ct. 612. Subsequent cases have clarified that courts should examine the effect that the restriction will have on the party ultimately using the money for political speech. Randall, 548 U.S. at 247, 126 S.Ct. 2479. Accordingly, we must examine whether Amendment 54 will affect the ability of individuals running for political office in Colorado to amass the resources necessary for effective advocacy. Id. at 247, 126 S.Ct. 2479.

Although Amendment 54's absolute ban on contributions from sole source contractors severely limits the ability of those individuals to associate with a candidate or cause through monetary contributions, the limited record in this case does not provide adequate information for us to determine whether the contribution limits are so stringent that they will undermine the potential for robust and effective discussion of candidates and campaign issues. The evidence presented to the trial court includes statements by individuals running for elected office in Colorado. These candidates claim that the Amendment has restricted their ability to effectively raise funds for their campaign, due mostly to potential contributors' uncertainty about the scope of the Amendment.

Although this anecdotal evidence cannot be disregarded, we conclude that it is too conjectural to form the basis of our decision today. We recognize that, at this early stage of the Amendment's existence, it is difficult to provide empirical proof of its effect on campaign coffers. But speculation on the part of the court into whether candidates will be able to mount effective campaigns is unwise. We find that the record is insufficient for us to determine Amendment 54's cumulative monetary effect. However, this does not prevent us from considering the correlative overbreadth challenge to the Amendment.

B. Overbreadth

Instead of focusing on the ability of candidates to raise funds, our overbreadth analysis focuses on whether the law restricts a substantial amount of protected speech judged in relation to its legitimate purpose. The plaintiffs in this case argue, and the trial court agreed, that Amendment 54 is substantially overbroad on its face.

Generally, a facial challenge can only succeed if the complaining party can show that the law is unconstitutional in all its applications. United States v. Salerno, 481 U.S. 739, 745, 107 S.Ct. 2095, 95 L.Ed.2d 697 (1987). In a facial challenge asserting that a law is unconstitutional under the First Amendment, however, a showing that the law is overbroad may be sufficient to invalidate its enforcement. Wash. State Grange v. Wash. State Republican Party, 552 U.S. 442, 128 S.Ct. 1184, 1191 n. 6, 170 L.Ed.2d 151 (2008). "The showing that a law punishes a 'substantial' amount of protected free speech, judged in relation to the statute's plainly legitimate sweep, suffices to invalidate all enforcement of that law, until and unless a limiting construction or partial invalidation so narrows it as to remove the seeming threat or deterrence to constitutionally protected expression." Virginia v. Hicks, 539 U.S. 113, 118-19, 123 S.Ct. 2191, 156 L.Ed.2d 148 (2003). An amendment will not be invalidated for overbreadth simply because the plaintiff alleges that there are some impermissible applications. Taxpayers for Vincent, 466 U.S. at 800, 104 S.Ct. 2118. We require substantial overbreadth because of the purpose of the overbreadth doctrine — "the interest in preventing an invalid statute from inhibiting the speech of third parties who are not before the Court." Id.

The Supreme Court has not been consistent in addressing overbreadth under Buckley's "closely tailored" standard. However, the Supreme Court has repeatedly analyzed, and in some cases invalidated, statutes based on their overbroad limits on campaign contributions. See McConnell, 540 U.S. at 231-32, 124 S.Ct. 619 (Rehnquist, C.J., plurality opinion) (holding a contribution restriction for minors was invalid because the statute was not "closely drawn to avoid unnecessary abridgment of First Amendment freedoms"); Buckley, 424 U.S. at 25, 96 S.Ct. 612 (holding that a contribution limit may be upheld "if the State demonstrates a sufficiently important interest and employs means closely drawn to avoid unnecessary abridgment of associational freedoms"); Nixon, 528 U.S. at 387-88, 388 n. 3, 120 S.Ct. 897 (combining Buckley's "closely tailored" test with Buckley's overbreadth test).

McConnell's method of addressing close tailoring is especially telling on this point. Chief Justice Rehnquist authored the section of the plurality opinion relating to contribution restrictions on minors. McConnell, 540 U.S. at 231, 124 S.Ct. 619. He held that the restriction was not closely tailored, but focused on the restriction of a minor's right of association and not on the effect it had on candidates. Id. at 232, 124 S.Ct. 619. Therefore, following the Supreme Court's example, a law is not closely tailored if it impermissibly interferes with protected associational rights even though there is no showing of its effect on campaign treasuries. We think this is especially true here because Amendment 54 only applies to a select group of individuals, but it absolutely eliminates their ability to associate through monetary contributions.

The overbreadth doctrine grew "out of concern that the threat of enforcement of an overbroad law may deter or 'chill' constitutionally protected speech. . . ." Hicks, 539 U.S. at 119, 123 S.Ct. 2191. "Many persons, rather than undertake the considerable burden (and sometimes risk) of vindicating their rights through case-by-case litigation, will choose simply to abstain from protected speech — harming not only themselves but society as a whole, which is deprived of an uninhibited marketplace of ideas." Id. Invalidating an overbroad law reduces the "social costs caused by the withholding of protected speech." Id.

Accordingly, we must determine Amendment 54's plainly legitimate sweep and then analyze the proportionality of its restrictions on protected First Amendment activity. First, we conclude that the plainly legitimate sweep of Amendment 54 is the elimination of an appearance of impropriety in the process of awarding no-bid government contracts. See Buckley, 424 U.S. at 27, 96 S.Ct. 612. Second, we must analyze whether Amendment 54 punishes a substantial amount of protected expression — in this case political contributions — in relation to its plainly legitimate sweep. We will examine the Amendment's contested provisions individually to determine their overbreadth, but our ultimate determination on Amendment 54's overbreadth rests on whether the provisions, taken as a whole, restrict a substantial amount of protected speech.

1. Whether Amendment 54 Is Overbroad in its Application to "Any Government Contract" that Does Not Solicit at Least Three Bids

Section 15 of Amendment 54 prohibits campaign contributions by holders of "sole source government contracts." Colo. Const. art. XXVIII, § 15. "Sole source government contract" is defined as "any government contract that does not use a public and competitive bidding process soliciting at least three bids prior to awarding the contract." Colo. Const. art. XXVIII, § 2(14.4). Because Amendment 54's goal is eliminating the appearance of impropriety, it naturally should encourage competitive bidding where possible and apply only to contracts where the government has some discretion in choosing a contractor. Only under these circumstances are pay-to-play arrangements a danger.

But Amendment 54 is unqualified in its application. Thus, the Amendment covers even those contracts that are not susceptible to competitive bidding as well as situations where competitive bidding is undesirable. As noted in the Blue Book, it would apply in situations where competitive bidding is seen by the State as inappropriate, such as when the contract is for goods that can only be supplied by one vendor. It would also apply in rural areas where there may not be three bidders willing and able to fulfill the contract. Therefore, the Amendment, as written, applies to a substantial number of state contracts where competitive bidding is either not feasible or not appropriate.

The purpose of Amendment 54 is not furthered by such an over-inclusive definition of "sole source contract;" its broad application to all contracts that do not solicit three bids is not sufficiently directed toward eliminating the appearance of impropriety. Because Amendment 54 applies to "any government contract" that does not solicit three bids, without including any further limiting language, we find this provision to be overbroad.

2. Whether Amendment 54 Is Overbroad in its Application to "Any Political Party" and "Any Candidate for Any Elected Office"

Amendment 54 prohibits all contributions from sole source government contractors "for the benefit of any political party or for the benefit of any candidate for any elected office of the state or any of its political subdivisions." Colo. Const. art. XXVIII, § 15. By its terms, then, the Amendment applies to state, county, and local governments, as well as to any of the over three thousand special districts within the state.

For example, state legislators, school board members, county commissioners, and board members for water districts are prohibited from accepting contributions from sole source government contractors regardless of their ability to influence contract awards or their relation to the contractor. As written, Amendment 54 would require us to find an appearance of impropriety in a contribution, already limited in size under article XXVIII, to any political candidate. It would require us to assume, for instance, that a small contribution to a candidate for the general assembly automatically leads to a public perception that the donor will receive some quid pro quo benefit from a city or special district with which the donor holds a sole source contract. As noted above, the government's interest in eliminating the appearance of impropriety is not without bounds, and in this case we cannot sacrifice First Amendment freedoms to an implausible perception of impropriety that links every contribution to an illicit arrangement extending to all levels of state government. Thus, this provision of Amendment 54 is over-inclusive in light of its plainly legitimate sweep. The Amendment fails to tailor its prohibitions towards those who have some control over awarding no-bid contracts, which would be directly correlated to its purpose of preventing the appearance of impropriety.

The State and amicus Clean Government Colorado argue that this type of statewide ban is not unique and cite to cases upholding similar bans in other jurisdictions. The cases the State relies on for this proposition, however, are distinguishable. In Ysursa v. Pocatello Education Association, the Supreme Court upheld an Idaho law that prohibited payroll deductions for political activities. ___ U.S. ___, 129 S.Ct. 1093, 1096, 172 L.Ed.2d 770 (2009). A union challenged the statute, arguing that it violated its members' First Amendment rights. Id. The Supreme Court held that the statute did not restrict political speech but only declined to promote speech through payroll deductions. Id. This distinction between restriction and promotion formed the basis for the Supreme Court's holding. Id. 129 S.Ct. at 1099.

Amendment 54, on the other hand, is undoubtedly a restriction on political speech. Unlike the Ysursa Court, we are not addressing how contributions can be made but rather whether a complete ban on all contributions can be applied to all levels of government. Thus, even though Ysursa upheld a statewide prohibition that applied to all political contributions, the Supreme Court's decision rested on a distinction that does not apply to Amendment 54.

The State further argues that the application of Amendment 54 to any candidate for any office is similar to a federal prohibition on contributions under 2 U.S.C. § 441c(a), (b) (2006). Section 441c(a) prevents "any person" that holds a certain type of contract with the federal government from contributing to federal campaigns for the contract's duration. Section 441c(b) expressly allows a company that is prohibited from contributing to create a separate segregated fund as an alternative to direct political contributions. As the trial court noted, section 441c addresses only a limited number of contracts and applies only to members of Congress, the President, and the Vice President, thus tailoring its restrictions to individuals with oversight responsibility. That it applies to "any person" holding such a contract is only marginally relevant, especially given that it allows separate segregated funds to be set up by contract holders. Unlike Amendment 54, section 441c applies only to specific contracts and government officials and leaves open a separate avenue to contribute to political campaigns.

Finally, despite the State's urging, we do not find persuasive Green Party of Connecticut v. Garfield, 590 F.Supp.2d 288, 338 (D.Conn. 2008). In Garfield, a federal district court upheld Connecticut's cross-jurisdictional pay-to-play contribution restrictions. Id. Connecticut, however, was attempting to reemerge from a wave of corruption scandals, and the district court repeatedly emphasized the importance of eliminating quid pro quo arrangements in light of that state's political climate. Id. at 303-07, 318 (finding specific evidence of corruption to constitute a special justification). In any event, the decision in Garfield is not binding on this court.

Accordingly, we find that this provision, judged in relation to the Amendment's purpose of eliminating the appearance of impropriety, oversteps its legitimate sweep and restricts a substantial amount of protected speech.

3. Whether Amendment 54's Penalty Provisions Are Overbroad

Amendment 54's penalty provision, section 17, is divided into five subsections, which impose separate penalties for making prohibited contributions, accepting prohibited contributions, and failing to report the discovery of a violation. Colo. Const. art. XXVIII, §§ 17( 1) to 17( 4). Additionally, section 17(5) provides for an enforcement action that may be filed by any registered Colorado voter. We find that, apart from the restitutionary penalty of subsection (1), every subsection of section 17 penalizes protected First Amendment expression in a manner disproportionately severe to Amendment 54's purpose. The disproportionate punishment serves to chill protected speech and is insufficiently related to eliminating the appearance of impropriety.

Section 17(1) imposes a penalty on "[a]ny person who intentionally accepts contributions on behalf of a candidate committee, political committee, small donor committee, political party, or other entity. . . ." A person who accepts a prohibited contribution under this subsection "has engaged in corrupt misconduct and shall pay restitution to the general treasury" to compensate for expenses associated with the breach. This is a restitutionary remedy that compensates the government for expenses associated with prohibited contributions. It applies only to intentionally accepting a contribution in violation of section 15, which we read to mean a knowing violation of Amendment 54. We find that this provision is proportionate to and consistent with the legitimate sweep of Amendment 54.

Section 17(1) also sanctions the bookkeeper of an entity with sole source contracts if the bookkeeper discovers a violation of section 15 and does not report it to the secretary of state or appropriate government officer within ten days of the discovery. If the bookkeeper fails to report the discovery of a violation, "then that person may be contractually liable in an amount up to the above restitution." Colo. Const. art. XXVIII, § 17( 1). Again, this reporting requirement is directly related to the purpose of the Amendment and is not overbroad. The penalty for a violation by a bookkeeper is not disqualification or removal from office but is instead restitutionary. We find that, when interpreted consistently with the other sections of Amendment 54, section 17(1) provides an appropriately tailored punishment for accepting a prohibited contribution and for a bookkeeper's failure to report the discovery of a section 15 violation.

Section 17(3) provides the penalty for an intentional violation by a contract holder. It prohibits a contract holder who intentionally violates section 15 from holding any government contract and from holding public employment for three years. Irrespective of the amount of the prohibited contribution or the ability of the recipient to award contracts, any person violating section 15 faces a severe economic penalty as well as a harsh restriction on employment. We hold that this excessive punishment oversteps Amendment 54's plainly legitimate sweep.

Section 17(4) removes any elected or appointed official from office if they knowingly violate section 15. Additionally, such official is disqualified from holding any "office of honor, trust or profit in the state. . . ." Colo. Const. art. XXVIII § 17( 4). Finally, a violation "shall constitute misconduct or malfeasance." Id. We find that this provision is similar to section 17(3) in its overbreadth. Section 17(4) calls for removal and disqualification from office — permanently — for any knowing violation regardless of its severity. A one-size-fits-all penalty may be appropriate when the sanction is a monetary fine, but here the severity of the penalty is disproportionate to Amendment 54's purpose.

Finally, section 17(5) allows any registered voter of Colorado to enforce section 15 or section 17(2) through an injunction, declaratory relief, or civil damages. We do not find this provision to be unconstitutional under the First Amendment. Although it poses an undeniable risk of harassment, that alone is insufficient to invalidate section 17(5).

4. Whether Amendment 54 Is Overbroad in Its Prohibition of Contributions for Two Years After the Termination of a Sole Source Contract

Section 15 of Amendment 54 bans contributions not only for the duration of the contract but also for two years after its expiration or termination. We understand that the purpose of this provision is to eliminate a perception that, once the contract is at an end, sole source contractors will contribute money to political campaigns in hopes of procuring another contract. In light of our holding that Amendment 54 is overbroad in its application to all no-bid contracts and all candidates, this two-year additional restriction is likewise overbroad. We find that a two-year ban on contributions after the contract is expired inhibits a substantial amount of protected speech, especially considering the overbreadth of Amendment 54's other restrictions.

5. Whether Amendment 54 Is Overbroad in Its Application to Immediate Family Members

Amendment 54 not only places restrictions on contributions by the "contract holder" but also on contributions "on behalf of his or her immediate family members." Colo. Const. art. XXVIII § 15. The Amendment defines "immediate family member" as including everyone with at least a third-degree relationship to the contract holder. Colo. Const. art. XXVIII § 2(8.5). The plaintiffs and the trial court struggled with the imprecise language of section 15, attempting to determine whether a contribution "by" a family member was also a contribution "on behalf of" that family member and thus prohibited by the Amendment. To the extent that there is ambiguity, we would read the provision to encompass only those contributions made by the contract holder in the name of his or her immediate family member and those contributions made by immediate family members at the direction of the contract holder. Even applying this narrow interpretation, we hold that the Amendment's application to "immediate family members" is unconstitutionally overbroad.

The language of section 15 unconstitutionally chills protected speech by the family members of sole source contract holders. Instead of running the risk of making a political contribution that violates section 15, immediate family members are likely to refrain from contributing altogether, especially in light of the severe sanctions that the Amendment provides. This chilling effect is exacerbated by section 15's unconstitutionally vague language, which provides no intelligible standard of conduct to which immediate family members must conform. Under Amendment 54, a wide array of actions by the contract holder could reasonably be seen as causing an immediate family member to make a prohibited contribution. If this occurs, the contract holder would then be disqualified from public office and from holding any sole source contract for three years. Immediate family members will be deterred from contributing altogether, a result that oversteps the purpose of Amendment 54 and stifles a substantial amount of protected speech.

The Colorado Constitution already prohibits any individual from being reimbursed by another for a campaign contribution. Colo. Const. art. XXVIII § 3( 11). Thus, Colorado already prohibits one of the main concerns of section 15 — that a family member will make a contribution in his or her own name while using the funds of another. Amendment 54 expands the scope of prohibited conduit contributions and increases the penalty in a manner disproportionate to its purpose. Therefore, Amendment 54's prohibition on contributions made on behalf of immediate family members serves to substantially chill speech and does little to further its purpose of eliminating the appearance of impropriety.

6. Whether Amendment 54 Is Overbroad in Its Application to Nonprofit Organizations

Amendment 54 applies even-handedly to both for-profit and nonprofit organizations. See Colo. Const. art. XXVIII § 2(4.5). The directors and officers of nonprofit organizations holding sole source government contracts are prohibited from contributing to any candidate or party in the state. Plaintiff Ritchie, chairman and CEO of the DCPA, raised this concern to the trial court. Even though he serves without compensation, by virtue of Ritchie's position he is prohibited from contributing to campaigns or parties in Colorado. Indeed, many nonprofit board members serve for little or no compensation. If Amendment 54 stands as written, nonprofit board members must choose between remaining on the board and exercising their First Amendment rights. We find that this creates a perverse incentive to refrain from charitable activity and does not comport with Amendment 54's purpose.

We agree with the State that, in many ways, non-profit organizations are not much different in character than those that operate for profit. Both are interested in self-preservation and will naturally seek courses of action that benefit the organization. We ultimately conclude, however, that a restriction on First Amendment activity for those that serve a nonprofit falls outside of Amendment 54's plainly legitimate sweep.

IV. Vagueness

The plaintiffs also contend that Section 15 of Amendment 54 is unconstitutionally vague. As the trial court noted, under the First Amendment a law must be specific enough "so that individuals may assess the burden on their rights to free speech and free association and make informed decisions before acting." Common Sense Alliance v. Davidson, 995 P.2d 748, 756 (Colo. 2000) (citing Grayned v. City of Rockford, 408 U.S. 104, 108, 92 S.Ct. 2294, 33 L.Ed.2d 222 (1972) ("[B]ecause we assume that man is free to steer between lawful and unlawful conduct, we insist that laws give the person of ordinary intelligence a reasonable opportunity to know what is prohibited, so that he may act accordingly.")); Independence Inst. v. Coffman, 209 P.3d 1130, 1137 (Colo.App. 2008) ("The vagueness doctrine helps to ensure that a law is sufficiently definite so that citizens will be alerted to the conduct that is proscribed and they may act accordingly, and so that the law will not be arbitrarily applied.").

Applying this to Amendment 54, we must determine whether a contract holder can make an informed decision about whether his conduct is prohibited by the Amendment. Section 15 applies to contributions "on behalf of" immediate family members that the contract holder caused to be made, or induced by any means, directly or indirectly. Colo. Const. art. XXVIII § 15. Thus, it applies to contributions by immediate family members if they were "directly caused," "directly induced," "indirectly caused," or "indirectly induced" by the contract holder. We are not confident that, under these permutations, a contract holder can make an informed decision before acting. Accordingly, we hold that the possible applications of section 15 render it unconstitutionally vague with respect to prohibited contributions of immediate family members.

V. Application to Labor Organizations and Collective Bargaining Agreements

"[T]he First and Fourteenth Amendments guarantee freedom to associate with others for the common advancement of political beliefs and ideas." Buckley, 424 U.S. at 15, 96 S.Ct. 612 (internal quotations omitted). Labor organizations and unions, represented here by the Dallman plaintiffs, provide a tangible example of the very associational freedoms the First Amendment protects. Section 2(14.4) explicitly includes collective bargaining agreements as a type of regulated sole source government contract, despite having none of the characteristics of pay-to-play contracts the Amendment was drafted to combat. Similarly, section 2(4.5) subjects "labor organizations and any political committees created or controlled by the labor organization" to the Amendment's prohibitions on contract holders, while omitting and implicitly exempting political committees created by any other type of entity.

Thus, Amendment 54 impermissibly abridges union members' First Amendment rights to associate in order to amplify their political voice. It also violates their Fourteenth Amendment Equal Protection Clause guarantees by treating unions differently than other entities without compelling justification. We discuss each in turn.

A. The First Amendment

Consistent with the Supreme Court's decision in Buckley, we have held that the First Amendment protects organized labor's freedom to engage in political speech, specifically through political contributions. Colo. Educ. Ass'n v. Rutt, 184 P.3d 65, 76 (Colo. 2008). "Just as restrictions on expenditures impinge upon political expression, they also restrain political association, which is equally protected by the First Amendment. Restrictions on contributions and expenditures by labor organizations implicate this right because they impose burdens on individuals acting together to amplify their speech." Id. (citing Buckley, 424 U.S. at 15, 96 S.Ct. 612). Thus, the issue here is whether Amendment 54 violates the First Amendment by restricting all contributions from labor organizations and their political committees. To answer this question, we follow the Supreme Court's precedent and subject the law to "the closest scrutiny," requiring the State demonstrate "a sufficiently important interest and employ[] means closely drawn to avoid unnecessary abridgment of associational freedoms." Buckley, 424 U.S. at 25, 96 S.Ct. 612.

In Buckley, the Supreme Court considered a First Amendment challenge to a $1,000 campaign contribution limit as part of the Federal Election Campaign Act (FECA). Buckley, 424 U.S. at 25, 96 S.Ct. 612. It found three governmental interests justifying the limit, but it relied solely on "the prevention of corruption and the appearance of corruption spawned by the real or imagined coercive influence of large financial contributions on candidates' positions and on their actions if elected to office." Id. The Supreme Court recognized this as a sufficiently important government purpose to justify the limit, reasoning that: (1) the $1,000 limit narrowly targeted problematic large donations while allowing small contributions, and (2) the limit still allowed some speech through volunteering, direct contributions, or the coordinated efforts of PACs. Id. at 28-29, 28 n. 31, 96 S.Ct. 612.

Indeed, although the purpose of Amendment 54 and that of FECA are nearly identical, Buckley is largely inapplicable here because the three primary justifications underlying the Buckley holding are absent. Each of these three reasons taken alone requires us to strike the union references in the Amendment for violating the First Amendment.

First, section 15 of Amendment 54 imposes an absolute bar on any contribution no matter how small, completely silencing the political voice that the Buckley Court took pains to protect. Given FECA's goal of targeting the large, potentially corruptive contributions, Buckley ruled that allowing small contributions was an essential outlet for expression in the otherwise comprehensive law because it demonstrated a narrowly tailored solution. See id. at 28, 96 S.Ct. 612. Without such an outlet here, we cannot find Amendment 54's solution to the pay-to-play problem "closely drawn" under First Amendment analysis.

Second, section 2(4.5) leaves labor organizations involved in collective bargaining with no political voice either through their own direct contributions or through any affiliated PAC. In light of Buckley, where the Supreme Court upheld the federal spending limit only after stressing the fact that union PACs still retained a voice, Amendment 54's comprehensive ban on political speech by unions cannot stand. Because there are other, more discrete options to limit corruption without completely stifling speech, we hold that section 2(4.5) is not closely drawn.

Third, the stated purpose of Amendment 54 — preventing the appearance of impropriety — cannot exist in negotiating collective bargaining agreements because the government does not and cannot select the union with which it contracts. Indeed, a union cannot contract with the government without first demonstrating, usually through an election, that a majority of the represented employees have chosen the specific union as their representative. See Abood v. Detroit Bd. of Educ., 431 U.S. 209, 220-21, 97 S.Ct. 1782, 52 L.Ed.2d 261 (1977); Littleton Educ. Ass'n v. Arapahoe County Sch. Dist., No. 6, 191 Colo. 411, 416-17, 553 P.2d 793, 796-97 (1976). Once that union has been endorsed, it alone can enter into a public collective bargaining agreement with the State, meaning the State has absolutely no choice over which union to award a contract. Abood, 431 U.S. at 220-21, 97 S.Ct. 1782 ("The principle of exclusive union representation . . . is a central element in the congressional structuring of industrial relations."); see also Littleton Educ. Ass'n, 191 Colo. at 416-17, 553 P.2d at 796-97.

In fact, a negotiated collective bargaining agreement shares few, if any, common characteristics with the standard procurement contract. The State must contract with the one elected union and the benefits from the contract flow through to the employees without benefitting the union in any direct way. The union's power, in turn, is simply a derivative of its represented employees. These attributes make the potential of pay-to-play corruption in a collective bargaining agreement exceedingly remote, so the government lacks a sufficiently important interest to justify this sort of heavy-handed regulation. Hence, because Amendment 54's prohibitions do not serve a sufficiently important government interest in this case, we find its organized labor provisions, specifically subsections 2(4.5) and 2(14.4), violate the First Amendment.

2. The Fourteenth Amendment

Amendment 54 prohibits contributions by a "labor organization and any political committees created or controlled by the labor organization," but it does not restrict contributions by PACs affiliated with any other type of donor, such as private corporations. Colo. Const. art XXVIII, § 2(4.5). By prohibiting both unions and their PACs from making contributions, Amendment 54 completely strips unions of any political voice, while still allowing corporations to participate through their own PACs. See Rutt, 184 P.3d at 75 ("Campaign spending is a form of speech, because 'virtually every means of communicating ideas in today's mass society requires the expenditure of money.'" (quoting Buckley, 424 U.S. at 19, 96 S.Ct. 612)). Thus, Amendment 54 treats labor organizations differently than other entities, implicating the freedoms guaranteed by the Equal Protection Clause of the Fourteenth Amendment.

Our threshold inquiry in an equal protection claim is whether the law produces "dissimilar treatment of similarly situated individuals." Indus. Claim Appeals Office v. Romero, 912 P.2d 62, 66 (Colo. 1996); Harris v. Ark, 810 P.2d 226, 229 (Colo. 1991) ("Equal protection of the laws guarantees that persons who are similarly situated will receive like treatment by the law."). The State contends that, due to manifest structural differences between private corporations and labor unions, the two groups are not similarly situated, meaning the law need not treat them equally.

We find, however, that the proper inquiry does not end by merely acknowledging obvious superficial differences between persons or groups, but instead focuses on whether "reasonable differences" between the two can justify a law's differential treatment. Bushnell v. Sapp, 571 P.2d 1100, 1105, 194 Colo. 273, 281 (1977); see also Romero, 912 P.2d at 66-67. In other words, the "similarly situated" inquiry turns not on whether two entities are superficially alike, but on whether the two are situated or positioned similarly, thereby allowing one law to affect them differently. If the definition of similarly situated were not tethered to how persons are affected by the law, any law that could demonstrate a facial difference between two groups would escape scrutiny and pass constitutional muster, completely eviscerating the Equal Protection Clause.

Although unions and corporations are structurally dissimilar, both are similarly situated under Amendment 54's auspices. Therefore, we proceed to determine what level of scrutiny the Equal Protection Clause demands. "The Equal Protection Clause requires that statutes affecting First Amendment interests be narrowly tailored to their legitimate objectives." Police Dept. v. Mosley, 408 U.S. 92, 101, 92 S.Ct. 2286, 33 L.Ed.2d 212 (1972) (citing Williams v. Rhodes, 393 U.S. 23, 69, 89 S.Ct. 5, 21 L.Ed.2d 24 (1968)); see also Carey v. Brown, 447 U.S. 455, 461-62, 100 S.Ct. 2286, 65 L.Ed.2d 263 (1980) ("When government regulation discriminates among speech-related activities in a public forum, the Equal Protection Clause mandates that the legislation be finely tailored to serve substantial state interests, and the justifications offered for any distinctions it draws must be carefully scrutinized.").

While we acknowledge that the stated purpose of Amendment 54 is legitimate in other contexts, that governmental interest fails to justify the disparate treatment of labor unions and other types of sole source contractors. Unions present little threat of pay-to-play corruption because employees volitionally elect to be (or not to be) represented by a specific union prior to negotiating a new collective bargaining agreement, and in turn, the state must negotiate with that union regardless of its preferences. See Abood, 431 U.S. at 220-21, 97 S.Ct. 1782. Certainly the threat of impropriety inherent in this process is insufficient to merit additional prohibitions on organized labor's speech, especially when other private entities are better structured to engage in illicit pay-to-play contracting.

The State also argues that there is a heightened governmental interest in protecting state employees from any appearance of corruption. See, e.g., Ysursa, 129 S.Ct. at 1098-99. But this rationale is entirely distinct from Amendment 54's stated purpose of preventing corruption in contracting. Thus, because there is no compelling governmental interest underlying the disparate treatment of different sole source contractors in this case, we hold that Amendment 54's provisions applying to labor organizations also violate the Fourteenth Amendment's Equal Protection Clause.

VI. The Prohibition against Contributing to Ballot Issues

Section 17(2) prevents "any person" who contributes to a ballot issue from entering into a sole source contract "related" to that issue. This provision contains no temporal limitation. Sections 17(3) and 17(4) provide the penalties for violating the ballot issue provision. Those sections were discussed previously in this opinion.

The Supreme Court has held that limits on contributions to ballot measures implicate First Amendment freedoms and are therefore subject to exacting scrutiny. First Nat'l Bank of Boston v. Bellotti, 435 U.S. 765, 786, 98 S.Ct. 1407, 55 L.Ed.2d 707 (1978). The Bellotti Court distinguished candidate elections from votes on ballot issues. Id. at 790, 98 S.Ct. 1407. "The risk of corruption perceived in cases involving candidate elections simply is not present in a popular vote on a public issue." Id. (internal citations omitted). The Court noted that the purpose of contributing to a ballot issue is to influence the outcome of the vote, "[b]ut the fact that advocacy may persuade the electorate is hardly a reason to suppress it." Id. Consequently, contribution limits to ballot issues are subject to a high standard of scrutiny — the government must show a "compelling" interest, and "the State must employ means closely drawn to avoid unnecessary abridgement." Id.

The ballot issue provision of Amendment 54 is similar to a restriction that the Tenth Circuit previously held unconstitutional. See Elam Const., Inc. v. Reg'l Transp. Dist., 129 F.3d 1343, 1347 (10th Cir. 1997). In Elam, the Regional Transportation District adopted a resolution that it would not contract with any party that had contributed more than $100 to a tax rate increase ballot measure. Id. at 1344. A construction company challenged the resolution, claiming that the resolution violated its First Amendment rights. Id. at 1344-45. The Tenth Circuit agreed, citing Bellotti's distinction between candidate elections and votes on public issues. Id. at 1347.

We adopt the approach of Bellotti and Elam here. In this case, concerns about quid pro quo arrangements are not sufficient to justify Amendment 54's stringent restrictions. The government's interest in eliminating the appearance of impropriety is not sufficiently "compelling" with respect to ballot issues. A contribution to a ballot issue is not a contribution to an individual political candidate; the appearance of impropriety, accomplished through a quid pro quo arrangement, is divorced from the contribution itself. Instead, a contribution to a ballot issue is a show of support for that specific issue, which is then left to the voters to decide. If the measure passes, the controlling government authority must award the contract. The government official with discretion to award the contract has not received any personal benefit from a contribution to the ballot issue; thus, contributing to a ballot issue does not give the appearance of a standard quid pro quo arrangement. Because there is an insufficient link between a ballot issue contribution and the contract award, we hold that the State's interest is not sufficiently compelling under Bellotti.

Amicus Clean Government Colorado urges us to adopt a narrow reading of this restriction. It argues that, because section 17(2) prohibits "any person" from entering into a sole source contract after contributing to the ballot issue, only the contributing entity itself falls under the prohibition. With respect to unions, Clean Government Colorado argues that only the union itself is prohibited from contributing to ballot issues that would affect its collective bargaining agreement. Therefore, a union's PACs or small donor committees can contribute to a ballot issue without running afoul of section 17(2). Without deciding what entities would be covered under 17(2)'s "any person" language, we hold that the State's interest is not sufficiently compelling. Any reading of this section would be an unconstitutional prohibition under the First Amendment.

VII. An Overview of Amendment 54's Constitutionality

In sum, we have found broad sections of Amendment 54 unconstitutional. Before delving into a remedy, we believe it helpful to reproduce Amendment 54 here. We strike out all language that we have found to violate the Constitution and all references to those unconstitutional sections. After the necessary redactions, the remaining sections of the Amendment would read as follows.

Section 15: Because of a presumption of impropriety between contributions to any campaign and sole source government contracts, contract holders shall contractually agree, for the duration of the contract and for two years thereafter, to cease making, causing to be made, or inducing by any means, a contribution, directly or indirectly, on behalf of the contract holder or on behalf of his or her immediate family member and for the benefit of any political party or for the benefit of any candidate for any elected office of the state or any of its political subdivisions.

Section 16: To aid in enforcement of this measure concerning sole source contracts, the executive director of the department of personnel shall promptly publish and maintain a summary of each sole source government contract issued. Any contract holder of a sole source government contract shall promptly prepare and deliver to the executive director of the department of personnel a true and correct "Government Contract Summary," in digital format as prescribed by that office, which shall identify the names and addresses of the contract holders and all other parties to the government contract, briefly describe the nature of the contract and goods or services performed, disclose the start and end date of the contract, disclose the contract's estimated amount or rate of payment, disclose the sources of payment, and disclose other information as determined by the executive director of the department of personnel which is not in violation of federal law, trade secrets or intellectual property rights. The executive director of the department of personnel is hereby given authority to promulgate rules to facilitate this section.

Section 17: (1) Every sole source government contract by the state or any of its political subdivisions shall incorporate article XXVIII, section 15, into the contract. Any person who intentionally accepts contributions on behalf of a candidate committee, political committee, small donor committee, political party, or other entity, in violation of section 15 has engaged in corrupt misconduct and shall pay restitution to the general treasury of the contracting governmental entity to compensate the governmental entity for all costs and expenses associated with the breach, including costs and losses involved in securing a new contract if that becomes necessary. If a person responsible for the bookkeeping of an entity that has a sole source contract with a governmental entity, or if a person acting on behalf of the governmental entity, obtains knowledge of a contribution made or accepted in violation of section 15, and that person intentionally fails to notify the secretary of state or appropriate government officer about the violation in writing within ten business days of learning of such contribution, then that person may be contractually liable in an amount up to the above restitution.

(2) Any person who makes or causes to be made any contribution intended to promote or influence the result of an election on a ballot issue shall not be qualified to enter into a sole source government contract relating to that particular ballot issue.

(3) The parties shall agree that if a contract holder intentionally violates section 15 or section 17(2), as contractual damages that contract holder shall be ineligible to hold any sole source government contract, or public employment with the state or any of its political subdivisions, for three years. The governor may temporarily suspend any remedy under this section during a declared state of emergency.

(4) Knowing violation of section 15 or section 17(2) by an elected or appointed official is grounds for removal from office and disqualification to hold any office of honor, trust or profit in the state, and shall constitute misconduct or malfeasance.

(5) A registered voter of the state may enforce section 15 or section 17(2) by filing a complaint for injunctive or declaratory relief or for civil damages and remedies, if appropriate, in the district court.

Section 2: (4.5) "Contract holder" means any nongovernmental party to a sole source government contract, including persons that control ten percent or more shares or interest in that party; or that party's officers, directors or trustees; or, in the case of collective bargaining agreements, the labor organization and any political committees created or controlled by the labor organization;

(8.5) "Immediate family member," means any spouse, child, spouse's child, son-in-law, daughter-in-law, parent, sibling, grandparent, grandchild, stepbrother, stepsister, stepparent, parent-in-law, brother-in-law, sister-in-law, aunt, niece, nephew, guardian, or domestic partner;

(14.4) "Sole source government contract" means any government contract that does not use a public and competitive bidding process soliciting at least three bids prior to awarding the contract. This provision applies only to government contracts awarded by the state or any of its political subdivisions for amounts greater than one hundred thousand dollars indexed for inflation per the United States bureau of labor statistics consumer price index for Denver-Boulder-Greeley after the year 2012, adjusted every four years, beginning January 1, 2012, to the nearest lowest twenty five dollars. This amount is cumulative and includes all sole source government contracts with any and all governmental entities involving the contract holder during a calendar year. A sole source government contract includes collective bargaining agreements with a labor organization representing employees, but not employment contracts with individual employees. Collective bargaining agreements qualify as sole source government contracts if the contract confers an exclusive representative status to bind all employees to accept the terms and conditions of the contract; (14.6) "State or any of its political subdivisions" means the state of Colorado and its agencies or departments, as well as the political subdivisions within this state including counties, municipalities, school districts, special districts, and any public or quasi-public body that receives a majority of its funding from the taxpayers of the state of Colorado.

VIII. Remedy

Given that we have found large portions of Amendment 54 unconstitutional, we are left with the question of whether any portion of it can remain. In addressing a flawed amendment, we ask whether we can functionally preserve the amendment's intent after excising the problematic sections. Virginia v. Am. Booksellers Ass'n, Inc., 484 U.S. 383, 397, 108 S.Ct. 636, 98 L.Ed.2d 782 (1988) ("[T]he statute must be 'readily susceptible' to the limitation; we will not rewrite a state law to conform it to constitutional requirements."); People v. Montour, 157 P.3d 489, 501-02 (Colo. 2007); City of Lakewood v. Colfax Unlimited Ass'n, Inc., 634 P.2d 52, 70 (Colo. 1981). After striking all unconstitutional sections, we find it impossible to achieve Amendment 54's legitimate purpose without substantially rewriting the Amendment from the bench; therefore, we find the entire Amendment unconstitutional.

A. The Severability Doctrine

Our severability framework includes both state and federal jurisprudence, but both strands follow the same broad principles of judicial restraint mixed with resolute protection of the lawmaker's intent. "[T]he touchstone for any decision about remedy is legislative intent, for a court cannot 'use its remedial powers to circumvent the intent of the legislature.'" Ayotte v. Planned Parenthood of N. New England, 546 U.S. 320, 330, 126 S.Ct. 961, 163 L.Ed.2d 812 (2006) (quoting Califano v. Westcott, 443 U.S. 76, 94, 99 S.Ct. 2655, 61 L.Ed.2d 382 (1979) (Powell, J., concurring in part and dissenting in part)). For the purposes of this analysis, we find the intent of the people as expressed through the exercise of direct democracy comparable and equal to that of the legislature. Hence, the voters' stated purpose in section 15 guides our remedy.

To address deficient laws, we adhere to three specific rules. First, we cannot rewrite or actively reshape a law in order to maintain its constitutionality. Ayotte, 546 U.S. at 329, 126 S.Ct. 961. While we prefer a remedy that maintains the vitality and purpose of the law if possible, we will not pursue those aims with a myopic vigor that ignores the law before us. The law in question must be "readily susceptible" to a limiting construction because we decline to transgress the boundaries of the judiciary by drawing arbitrary and unsubstantiated parameters. Am. Booksellers Ass'n, Inc., 484 U.S. at 397, 108 S.Ct. 636. Drafting a law remains the role of the legislature or, in this case, the people of this state. We acknowledge and embrace our responsibility to redress problematic sections by striking entire laws for a single fault, but not at the expense of a "serious invasion of the legislative domain." Ayotte, 546 U.S. at 329, 126 S.Ct. 961 (quoting United States v. Nat'l Treasury Employees Union, 513 U.S. 454, 479 n. 26, 115 S.Ct. 1003, 130 L.Ed.2d 964 (1995)). Hence, we will look to fix the law but will not rewrite the law.

Second, we strike as little of the law as possible, with a preference for only partial, not complete, invalidation. Ayotte, 546 U.S. at 329, 126 S.Ct. 961. "Whether unconstitutional provisions are excised from an otherwise sound law depends on two factors: (1) the autonomy of the portions remaining after the defective provisions have been deleted and (2) the intent of the enacting legislative body." City of Lakewood, 634 P.2d at 70. In so doing, we must take into account any severability clause, which demonstrates the lawmaking body's intent that the law remain largely in force despite particular, limited infirmities. Id.; Champlin Ref. Co. v. Corp. Comm'n, 286 U.S. 210, 235, 52 S.Ct. 559, 76 L.Ed. 1062 (1932); Montour, 157 P.3d at 502. A severability clause raises a presumption that parts of a law can and should be struck without upsetting the law's proper purpose. City of Lakewood, 634 P.2d at 70. Thus, a severability clause answers the second, intent factor of the City of Lakewood framework, leaving only the question of whether an autonomous and functional law remains after removing the flawed portions.

That analysis naturally leads to the third rule — the presumption in favor of severing only specific parts of a law "is dispelled if what remains is so incomplete or riddled with omissions that it cannot be 'salvag[ed] . . . as a meaningful legislative enactment.'" Id. (quoting Pierce v. City County of Denver, 193 Colo. 347, 352, 565 P.2d 1337, 1340 (1977)); Montour, 157 P.3d at 502. In other words, we strike the entire law if its purpose is so eviscerated by necessary nullifications that the original law cannot stand in any working order. See, e.g., City of Lakewood, 634 P.2d at 56, 70 (striking an entire section of city's zoning code because "its deficiencies were so pervasive that it could not be salvaged as a meaningful legislative enactment"); Pierce, 193 Colo. at 352, 565 P.2d at 1340 ("While the [obscenity] ordinance in question contains a 'severability' clause . . . the pervasive character of its deficiencies renders futile any attempt to salvage it as a meaningful legislative enactment.").

B. Addressing Amendment 54's Deficiencies

Many aspects of Amendment 54 are unconstitutional for the reasons stated above, and we must address each of these problems individually to form our remedy today. For that reason, we proceed through the Amendment, applying the aforementioned rules before reaching a conclusion regarding whether each is salvageable or entirely unconstitutional.

Section 15 has three significant problems — vagueness, disproportionality, and overbreadth. Colo. Const. art. XXVIII, § 15. The language "causing to be made[] or inducing by any means . . . directly or indirectly" is void for vagueness. The "two years thereafter" clause sets a disproportionate punishment. Finally, the family provision and the application clauses including "any political party," "any elected office," and "any of its political subdivisions" are overbroad.

We are disinclined to rewrite the vague language because Amendment 54's goal — curbing the appearance of impropriety in government contracts — offers us no guidance on how to limit such language. Similarly, we cannot simply change the two years penalty, nor can we salvage the overbroad sections by wholesale rewriting who and what the Amendment targets. As the Supreme Court observed, some laws or sections are simply too broad to be "readily susceptible" to a limiting construction. Am. Booksellers Ass'n, Inc., 484 U.S. at 397, 108 S.Ct. 636. Moreover, we cannot sever the defects because Amendment 54's purpose would be lost without any language outlining the scope of its applicability. Given that the necessary nullifications would leave section 15 completely eviscerated, we are left with no choice but to sever all of section 15. City of Lakewood, 634 P.2d at 70.

We now turn to section 17, which has multiple subsections. Colo. Const. art. XXVIII, § 17. Section 17(1) begins by incorporating section 15, which we have excised in its entirety, so we must strike the first sentence and all subsequent references to section 15. Striking section 15 then renders the rest of section 17(1) meaningless because the remaining language attempts to prescribe a penalty without any corollary offense.

Section 17(2), which deals with ballot issues, is entirely unconstitutional because it is not closely drawn to a compelling government interest. Similarly, sections 17(3) and 17(4) impose unconstitutionally severe penalties for contract holders and government officials, leaving us no option but to entirely excise each as well.

Finally, we find no problem with section 17(5)'s citizen standing provision, so it could remain. Section 17(5), however, no longer represents any sort of "meaningful legislative enactment." City of Lakewood, 634 P.2d at 70. Thus, we must sever all of section 17. Id.

Focusing next on Amendment 54's definitions, we have found most of section 2 unconstitutionally overbroad. Colo. Const. art. XXVIII, § 2. Both section 2(8.5) (defining "immediate family members") and section 2(14.6) (defining "state or any of its political subdivisions") overbroadly apply the Amendment to families and government. Section 2(4.5) (defining "contract holder") legitimately includes ten-percent shareholders, officers, directors, and trustees, but we must strike as unconstitutional its application to organized labor. Lastly, section 2(14.4) (defining "sole source government contract") includes the phrases "any government contract" and "the state and any of its political subdivisions," which are overbroad as written. Also, its application to collective bargaining agreements is improperly tailored. The breadth and tailoring problems leave subsection 14.4 with valid time and financial restrictions but no cognizable application.

Amendment 54's purpose provides us with no standard by which to rewrite these definitions. See City of Lakewood, 634 P.2d at 70. We are in no position to arbitrarily decide to whom and to what types of government contracts Amendment 54 should apply — that is the role of the lawmaking body, the people in this case. Therefore, we must sever all of Amendment 54's additions to section 2 as well.

C. Amendment 54 Cannot Achieve Its Purpose

Because broad portions of Amendment 54 cannot remain in law and cannot be salvaged, we now ask whether the Amendment, taken as a whole, can serve as a "meaningful legislative enactment." Id.; Montour, 157 P.3d at 502; Pierce, 193 Colo. at 352, 565 P.2d at 1340. We find the deficiencies so pervasive as to render it wholly unconstitutional. After our obligatory striking of sections 15 and 17 and subsections 2(4.5), 2(8.5), 2(14.4), and 2(14.6), section 16's Government Contract Summary is the only portion that retains any substance. But section 16 is dependent on Amendment 54's definition of "sole source government contract," which we have already held is unconstitutionally overbroad. Furthermore, standing alone section 16 cannot effectuate the purpose behind the passage of Amendment 54, and our goal in this situation must be to give effect to the law's overall intent, not specific sections. See City of Lakewood, 634 P.2d at 70.

In conclusion, despite the constitutionality of some limited phrases and portions, we hold Amendment 54 "so incomplete or riddled with omissions that it cannot be 'salvag[ed] . . . as a meaningful legislative enactment.'" Id. (quoting Pierce, 193 Colo. at 352, 565 P.2d at 1340). Therefore, we affirm the trial court's preliminary injunction and remand for a final ruling consistent with this opinion.

Justice MARTINEZ dissents.

Justice COATS does not participate.

Justice EID does not participate.