New Jersey Statutes Title 19. Elections 19 § 6-12

The office of a member of a district board in an election district shall be deemed vacant upon such member becoming a candidate for an office to be voted upon at any primary, general election, school election, or special election for which he was appointed to serve, such candidacy to be determined by the filing of a petition of nomination, duly accepted by such member, in the manner provided by law. The municipal or county clerk with whom such petition and acceptance may be filed shall forthwith notify the county board of the county in which such election district is located, giving the name and residence of the member of the district board who has thus become a candidate, and the vacancy shall be filled as provided by law.