Mass. Gen. Laws ch. 53, § 88: Calling of caucuses

Section 88. All caucuses for the election of caucus officers, or for the nomination of candidates for any city of town office in any city or town wherein the laws relating to primaries have not been adopted, held by a political party which has adopted the provisions of law for the use of official ballots, shall be called and held as provided in sections eighty-nine to one hundred and sixteen, inclusive.