What are the registration deadlines?

Before a referendum: Residents may register to vote up to the day before. Before a primary: Mailed in registrations must be postmarked by 5 days before the primary date; residents may register in person by 12:00 noon of the last business day before the primary. In Connecticut, voters must be affiliated with the party holding the primary in order to participate.* Before a regular election, mail-in registrations must be postmarked by the 14th day before Election Day; residents may register in person by the 7th day before the election.