In the case of a mail-in ballot to be voted at a primary election for the general election, the ballot shall be rejected if the mail-in voter has indicated in the certificate the voter's intention to vote in a primary election of any political party in which the voter is not entitled to vote according to the Statewide voter registration system, and if it shall appear from the record that the voter is not entitled to vote in a primary election of the political party which has been so indicated.
Any mail-in ballot which is received by a county board of elections shall be rejected if the inner envelope is unsealed or if either the inner or outer envelope has a seal that has been tampered with. Mail-in ballots shall not be rejected due to any defect arising out of or relating to the preparation or mailing of the ballot or envelope that was not reasonably caused by the voters, such as a torn envelope and missing or insufficient glue to allow the ballot to be sealed.
Disputes about the qualifications of a mail-in voter to vote or about whether or not or how any mail-in ballot shall be counted in such election shall be referred to the Superior Court for determination, as provided under section 4 of P.L.2020, c.70 (C.19:63-17.1).
After such investigation, the county board of elections shall detach or separate the certificate from the inner envelope containing the mail-in ballot, unless it has been rejected by it or by the Superior Court, marking the envelope so as to identify the election district in which the ballot contained therein is to be voted as indicated by the voter's home address appearing on the certificate attached to or accompanying the inner envelope and, in the case of ballots to be voted at a primary election for a general election, so as to identify the political party in the primary election of which it is to be voted.
The location at which a county board of elections determines whether a mail-in ballot shall be accepted or rejected shall be considered an election district for the purposes of appointment of challengers.
The Secretary of State shall prepare educational materials regarding this section that all employed county boards of elections employees handling ballots shall read and have available for review. The materials shall provide clear information regarding the standards for acceptance and rejection of mail-in ballots and the safe-keeping of all materials in the case of rejection. The materials shall serve an educational purpose for the county board of elections and shall not replace, supersede, or void the authority of the county board or a judge of the Superior Court to accept or reject a mail-in ballot.
N.J.S. § 19:63-17