New Jersey Statutes Title 19. Elections 19 § 63-20

a. Any person who has applied for a mail-in ballot and has had the mail-in ballot either delivered in person or forwarded by mail, and voted and returned the voted ballot to the county board, shall not be permitted to vote in person at the polling place in the voter's election district on the day of the election.

b. Any person who: (1) has applied for a mail-in ballot and not received either the ballot or an explanation for not receiving such a ballot pursuant to notification by the county clerk or from the free-access system established pursuant to section 5 of P.L.2004, c. 88 (C.19:61-5) to provide such information; (2) has applied for and received a mail-in ballot and has not transmitted it to the county board of elections or given it to a bearer for delivery to the county board before the time for the opening of the polls on the day of an election; or (3) has applied for and received a mail-in ballot and has not transmitted it to the county board of elections or given it to the bearer for delivery to the county board, but appears at the polling place without the ballot and wishes to vote, shall be permitted to vote in person by provisional ballot at the polling place in the voter's election district on the day of the election.