N.J. Stat. § 19:44A-47
The Election Law Enforcement Commission shall have the power and duty, upon receipt of a complaint against a candidate for nomination for election for the office of Governor or for election for the offices of Governor and Lieutenant Governor who is required to participate in gubernatorial primary debates or gubernatorial election debates, respectively, to hold a hearing to determine whether that candidate has failed to participate in such debates. If, at the conclusion of a hearing under this section, the commission determines by majority vote that a candidate required to participate under section 10 of this 1989 amendatory and supplementary act has failed to do so, the chairman shall immediately inform the candidate in writing of that determination, identifying in that writing the date and circumstances of the failure. If, after having found that a candidate required to participate in a gubernatorial primary or gubernatorial election debate has failed to do so, the commission further finds that the failure occurred under circumstances which were beyond the control of the candidate and of such a nature that a reasonable person, taking into account the purposes of this act and the relevant facts of the case, would find the failure justifiable or excusable, then the candidate shall not be subject to any penalty or liability for his failure to participate. The candidate charged with the failure to participate shall have the burden of showing justification or excuse.
The campaign of any candidate or former candidate who shall have been required to participate in a gubernatorial primary debate or gubernatorial election debate under this 1989 amendatory and supplementary act, but who shall have been found to have failed to do so without reasonable justification or excuse, shall be liable for return of moneys previously received for use by the candidate to pay primary election campaign expenses or general election campaign expenses, respectively. In the case of a candidate for election to the office of Lieutenant Governor who is found to have failed to participate in a gubernatorial election debate, the candidate for election to the office of Governor shall jointly be liable for return of one half of the moneys previously received for use by the joint candidates to pay general election expenses. The commission shall determine the total amount of moneys for election campaign expenses in that year by the commission to the candidate or candidates under subsection a. or subsection b. of section 8 of P.L. 1974, c.26 (C.19:44A-33), as appropriate, and shall notify the campaign treasurer or the deputy campaign treasurer of the candidate or candidates of the liability of the campaign of the candidate or candidates, as of the date of the notice, for the repayment of those moneys plus interest on the unpaid amount of that liability from that date at the rate of 1% for each month or fractional part of a month during which that amount remains unpaid.
N.J.S. § 19:44A-47