N.J. Stat. Ann. § 19:59-11

11. Upon receipt of each ballot from an overseas voter or overseas federal election voter or overseas State and federal election voter, other than a ballot which had been sent by electronic means to an overseas voter or overseas federal election voter or overseas State and federal election voter, the signature on the certificate on the inner envelope shall be compared to that on the person's application. All ballots, whether originally sent to an overseas voter or overseas federal election voter or overseas State and federal election voter by air mail or electronic means, shall be approved, disapproved, processed, counted and disputes in connection therewith shall be handled in the same manner as is applicable to other vote by mail ballots. No ballot received after the time designated for the closing of the polls shall be counted.