N.J. Stat. § 19:12-1
The Secretary of State shall within thirty days after the completion of the canvass by the board of State canvassers, certify to each county clerk and county board the fact that at the next preceding general election held for the election of all of the members of the General Assembly ten per centum (10%) of the total vote cast in the State for members of the General Assembly had been cast for candidates having the same designation, thereby creating, within the meaning of this Title, a political party, to be known and recognized as such under the same designation as used by the candidates for whom the required number of votes were cast.
The Secretary of State shall also not later than the 74th day preceding the primary election for the general election in every year in which electors of President and Vice-President of the United States, a representative of the United States Senate, members of the House of Representatives, a Governor, a Lieutenant Governor, or Senator, or member or members of the General Assembly for any county, or any of them, are to be elected or any public question is to be submitted to the voters of the entire State, direct and cause to be delivered to the clerk of the county and the county board wherein any such election is to be held, a notice stating that such officer or officers are to be elected and that such public question is to be submitted to the voters of the entire State at the ensuing general election.
N.J.S. § 19:12-1