New Jersey Statutes Title 19. Elections 19 § 4-13

When in any two consecutive general elections in an election district more than 750 or less than 250 votes shall have been cast, the county board shall readjust the boundary lines of such election district and other election districts necessary to effect changes so that none of the election districts affected shall have more than 750 registered voters, and for this purpose shall have power to consolidate any number of districts and subdivide the same.