Connecticut Election Dates and Deadlines
Welcome to the Connecticut Election Dates and Deadlines listing from U.S. Vote Foundation.
Here you can find out when Connecticut elections will be held at the local, state and federal election level. There are many different deadlines associated with Connecticut elections, such as voter registration deadlines, absentee ballot request and ballot return deadlines, date ranges for early voting, and in-person voting options. No matter the type of election, or whether you are voting at home or voting from abroad, this service will provide you with comprehensive election dates and deadlines for your voting state of Connecticut.
Connecticut Federal and State Elections
Tue Jan 6, 2026 - Connecticut State House District 25 Special Election
Voter Registration Deadline
- Hand Delivered by
Fri Dec 19, 2025 - Postmarked by
Fri Dec 19, 2025 - In-Person, Received by
Mon Jan 5, 2026 8:00PM
Absentee Ballot Request Deadline
Submitted byMon Jan 5, 2026
Absentee Ballot Return Deadline
- In-Person, Received by
Mon Jan 5, 2026 - Post Received by
Tue Jan 6, 2026 8:00PM - Received in Dropbox by
Tue Jan 6, 2026 8:00PM
Early Voting Available
Early VotingDec 31, Jan 2, 3 and 4th from 10 AM to 6 PM
From Wed Dec 31, 2025 to Sun Jan 4, 2026
Tue Jan 13, 2026 - Connecticut State House District 139 Special Election
Voter Registration Deadline
- Postmarked by
Fri Dec 19, 2025 - Hand Delivered by
Fri Dec 26, 2025 - In-Person, Received by
Mon Jan 12, 2026 8:00PM
Absentee Ballot Request Deadline
- Postmarked by
Fri Dec 26, 2025 - Submitted by
Mon Jan 12, 2026
Absentee Ballot Return Deadline
- In-Person, Received by
Tue Jan 13, 2026 - Post Received by
Tue Jan 13, 2026 8:00PM - Received in Dropbox by
Tue Jan 13, 2026 8:00PM
Early Voting Available
Early VotingFrom Thu Jan 8, 2026 to Sun Jan 11, 2026
Tue Aug 11, 2026 - Connecticut Congressional Primary Election
Voter Registration Deadline
- Postmarked by
Fri Jul 24, 2026 - Received by
Fri Jul 24, 2026 - Election Day Registration & Voting
Tue Aug 11, 2026 8:00PM
Absentee Ballot Request Deadline
Submitted byMon Aug 10, 2026
Absentee Ballot Return Deadline
- In-Person, Received by
Mon Aug 10, 2026 - Post Received by
Tue Aug 11, 2026 8:00PM - Received in Dropbox by
Tue Aug 11, 2026 8:00PM
Early Voting Available
Early VotingFrom Mon Jul 27, 2026 to Sun Aug 9, 2026
Connecticut Local Elections
Connecticut Federal and State Elections
Tue Jan 6, 2026 - Connecticut State House District 25 Special Election
Voter Registration Deadline
Submitted byTue Jan 6, 2026 8:00PM
Absentee Ballot Request Deadline
Received byMon Jan 5, 2026
Absentee Ballot Return Deadline
Received byTue Jan 6, 2026 8:00PM
Tue Jan 13, 2026 - Connecticut State House District 139 Special Election
Voter Registration Deadline
Submitted byTue Jan 13, 2026 8:00PM
Absentee Ballot Request Deadline
Received byMon Jan 12, 2026
Absentee Ballot Return Deadline
Received byTue Jan 13, 2026 8:00PM
Tue Aug 11, 2026 - Connecticut Congressional Primary Election
Voter Registration Deadline
Submitted byTue Aug 11, 2026 8:00PM
Absentee Ballot Request Deadline
Received byMon Aug 10, 2026
Absentee Ballot Return Deadline
Received byTue Aug 11, 2026 8:00PM
Connecticut Local Elections
Go to the Sample Ballot Lookup for candidate names and to learn of any ballot measures and proposed state constitutional amendments on your ballot.
Select a State to View Election Dates and Deadlines
