Mass. Gen. Laws ch. 55B, § 2: Members holding or nominated for public office

Section 2. No member of said commission shall hold any public office except that of justice of the peace, notary public, or be a candidate for public office, or member or employee of any political committee. If any member of the commission shall be nominated as a candidate for public office and shall not in writing decline said nomination within three days, he shall be deemed to have vacated his office as a member of said commission.