N.J. Stat. § 19:15-18.2
If a person whose name does not appear on a challenge list prepared by the superintendent of elections of the county is challenged as not qualified or entitled to vote by a duly authorized challenger or by a member of the district board of elections and if this challenge is sustained by the district board of elections, the person making the challenge shall specify the grounds for the challenge in a signed affidavit on forms to be supplied by the superintendent of elections in those counties having a superintendent of elections or by the county clerk in all other counties. This document also shall state that the challenged voter has sought to establish his right to vote by signing an affidavit which states the challenged voter's qualifications to vote and by presenting a suitable identifying document, the identity of which shall be specified by the challenger. A copy of the challenger's affidavit shall be given to the challenged voter.
N.J.S. § 19:15-18.2