N.J. Stat. § 19:14-3
Each ballot shall have at the top a detachable coupon the width of the ballot above a perforated line not less than two inches from and parallel to the upper edge of the paper. These coupons shall be numbered consecutively from one to the number of ballots delivered to and received by the member or members of the district board for their respective election district.
Upon the coupon and above the perforated line shall be the words: "Ballot No. (number in figures)" as near the center of the coupon as may be practical, and below said number, and above perforated line shall be printed the following words: "To be torn off by the member of the board of registry and election in charge of the ballot box on election day." "Fold to this line."
N.J.S. § 19:14-3