Mass. Gen. Laws ch. 164, § 36

A town shall not acquire such a plant until authorized by a two thirds vote, taken by ballot with the use of the voting list, at each of two town meetings called therefor and held at intervals of not less than two nor more than thirteen months. If the first of such votes is favorable and the second unfavorable, or if both such votes are unfavorable, no similar vote shall be passed within two years thereafter.