Every election officer before entering upon the performance of his official duties shall be sworn before the city or town clerk, the presiding officer or clerk at the polls, or any officer qualified to administer oaths, and a record thereof shall be made.
Mass. Gen. Laws ch. 54, § 20
Oath of office
Official source: Massachusetts Legislature. Reproduced from public-domain Massachusetts statutes; confirm against the official source for the current text. Not legal advice.