Mass. Gen. Laws ch. 43 § 112
There shall be a separate form of ballot for each body to be elected, and each separate form of ballot shall be of a different and clearly distinguishable color from that of any other form of ballot prepared and furnished at the public expense for use at the same election. On such ballots for use in electing members of any elective body there shall be printed the following directions to voters, the first sentence under the heading to be printed in prominent bold faced type:
DO NOT use X marks.
Mark your choices with NUMBERS only.
Put the figure 1 opposite your first choice; the figure 2 opposite your second choice; the figure 3 opposite your third choice; and so on. Mark as many choices as you please.
Do not put the same figure opposite more than one name.
If you spoil this ballot, tear it across once, return it to the election officer in charge of the ballots and get another from him.
No official ballot used at any regular municipal election shall have printed thereon any party or political designation or mark, and there shall not be appended to the name of any candidate any such party or political designation or mark, or anything showing how he was nominated or indicating his views or opinions.
Mass. Gen. Laws ch. 43, § 112