N.J. Stat. § 19:34-10
If any person shall write, paste or otherwise place upon any official ballot any mark, sign or device of any kind as a distinguishing mark whereby to indicate to any member of any district board or other person how any voter has voted at any election, or if any person shall induce or attempt to induce any voter to write, paste or otherwise place on his ballot any mark, sign or device of any kind, as a distinguishing mark by which to indicate to any member of any district board or other person how such voter has voted, or shall enter into or attempt to form any agreement or conspiracy with any other person to induce or attempt to induce voters or any voter to so place any distinguishing mark, sign or device on his ballot, whether or not such act be committed or attempted to be committed, such person so offending shall be guilty of a crime of the fourth degree.
N.J.S. § 19:34-10