Mass. Gen. Laws ch. 39, § 20: Precinct voting

Section 20. Towns divided into voting precincts may, for their annual town election, establish precinct voting for all town officers to be chosen thereat, by accepting this section at a meeting held seventy days at least before the annual town meeting. The acceptance of this section or corresponding provisions of earlier laws may be revoked by the town at a meeting held seventy days at least before the annual town meeting; and if so revoked this section shall cease to be in force therein. Towns by vote or by-law may authorize voting precincts at special elections of town officers.