N.J. Stat. § 19:34-11
Every person not entitled to vote who fraudulently votes, and every person who votes more than once at any one election; or knowingly hands in two or more ballots folded together; or changes any ballot after it has been deposited in the ballot box; or adds, or attempts to add, any ballot to those legally polled at any election, either by fraudulently introducing the same into the ballot box before or after the ballots therein have been counted; or adds to or mixes with, or attempts to add to or mix with, the ballots lawfully polled, other ballots while the same are being counted or canvassed, or at any other time, with intent to change the result of such election; or carries away or destroys, or attempts to carry away or destroy, any poll list, or ballots, or ballot box, for the purpose of breaking up or invalidating the election; or willfully detains, mutilates or destroys any election returns; or in any manner so interferes with the officers holding the election, or conducting the canvass, or with the voters lawfully exercising their rights of voting at the election, as to prevent the election or canvass from being fairly had and lawfully conducted, shall be guilty of a crime of the third degree.
N.J.S. § 19:34-11