State policy snapshot · not legal advice
How voting is administered in Massachusetts
These values are reproduced from the EAC/NCSL comparison profile. Asterisks refer to footnotes in the official PDF; always confirm election-specific dates and eligibility with the government office.
Primary systemOpen to unaffiliated votersRegistration deadline policy10 days before Election DaySame-day registrationPermitted during part of the early voting periodEarly in-person voting17 days before Election Day**No-excuse absentee votingPermittedMail-ballot return policy5 p.m. on the 3rd day after the election***