Mass. Gen. Laws ch. 53 § 110
Immediately after the polls have been declared closed, but not before, the ballots shall be counted in full view of the voters. When they have been counted and the result ascertained, the presiding officer shall make public announcement thereof in open meeting, and the clerk shall, in open meeting, enter in words at length in the record book, the total number of names checked on the voting list, the total number of ballots cast, the names of all persons voted for, the number of votes for each person, and the title of the office for which he was a candidate. The clerk shall forthwith make a copy of said record, certify, seal and transmit it to the city or town clerk. He shall then, before the adjournment of the caucus, and in the presence of those who counted the same, seal up all ballots cast, with the voting lists used, and a statement of any challenge made.
The warden and clerk shall endorse upon such package the name of the political party holding the caucus, its date, its purpose, and, if in a city, for what ward and precinct the ballots were cast. The warden shall forthwith transmit, by the officer detailed to attend the caucus, to the city or town clerk, the ballots cast, the voting lists, the ballot boxes, the ballot box seals, the counting apparatus, the copy of the records, and the record book.
The city or town clerk shall safely keep such sealed packages for ten days. If within said time ten voters entitled to vote in said caucus file with him a written request so to do, he shall preserve said ballots and voting lists for three months and shall produce them if required by any court having jurisdiction or authority over them.
Mass. Gen. Laws ch. 53, § 110