Mass. Gen. Laws ch. 53, § 119: Elections by ballot; written request

Section 119. Upon the written request of ten or more voters present at a caucus and entitled to vote therein, presented by a motion or otherwise to the presiding officer for the time being, at any time before the choice of the officer to which it relates, any candidate, delegate or member of a political committee, and unless the caucus votes otherwise, the chairman of the caucus, shall be elected by ballot. In balloting, the voting lists furnished under section sixty-two of chapter fifty-one shall be used as check lists.