Massachusetts General Laws Part I. Administration of the Government (Ch. 1-182) Ch. 51, § 66

The registry of motor vehicles, and any other state agency, shall provide data, as deemed necessary by the state secretary, for the purposes of maintaining accurate and complete voter lists. Not less than every 2 months, the registry of motor vehicles, and any other state agency the state secretary designates, shall electronically transmit to the state secretary all data, as directed by the state secretary, that is relevant to the purposes of voter registration, including, if available, the following record fields: (i) name, current address, mailing address, date of birth, driver's license number or last 4 digits of the social security number and telephone number; (ii) date, time and nature of the last change to the information; and (iii) any additional information designated by the state secretary for such purposes and reasonably related to maintaining accurate and complete voter lists.

The state secretary shall provide the names and addresses and other data contained in the central registry of voters, as well as information received from the registry of motor vehicles and any other agency received for the purpose of maintaining accurate and complete voting lists, to the Electronic Registration Information Center, Inc.

The state secretary shall implement, if practicable, a centralized system to manage and evaluate data received from the Electronic Registration Information Center, Inc. to send mailings to voters centrally rather than from the local level. In the absence of such central management, if any actions regarding possibly inaccurate information in the central registry requires any action by the registrars, the secretary shall provide any such information to the registrars in electronic form and in a manner minimizing data management at the local level.