What Is A Provisional Ballot?
Provisional ballots are paper ballots that are used at the polling place on election day under the following circumstances:
(1) If your registration information is missing or is incomplete in the poll book.
(2) You moved from your registered address to another in the same county and did not notify your local election officials.
(3.) You did not provide the required identification information on your registration form or you’re a first time registrant by mail in New Jersey and your identification numbers could not be verified and you did not show ID to the poll workers in the polling place. For your provisional ballot to count, you have until the close of business on the second day after the election to provide your county commissioner of registration with the required ID information. You will be given instructions at your polling place on where to bring the ID.
(4) There is a marking in the poll book that you applied for a Vote by Mail ballot, but you did not apply for one, you applied for one but did not receive it, or you received it but did not return it.
Source: N.J. Dept. of State