950 C.M.R. 56.02
Any person may complain to the Secretary that a pattern of conduct, or a standard, practice or procedure, of a local election official is contrary to the election laws. Additionally, a person may complain to the Secretary, in accordance with the provisions of Section 402 of HAVA, that Title III has been violated, is being violated or is about to be violated.
(3) Any complaints must be made to: Elections Division
Office of the Secretary of the Commonwealth One Ashburton Place, Room 1705 Boston, MA 02108