Montana Election Dates and Deadlines
Welcome to the Montana Election Dates and Deadlines listing from U.S. Vote Foundation.
Here you can find out when Montana elections will be held at the local, state and federal election level. There are many different deadlines associated with Montana 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 Montana.
Montana Federal and State Elections
Montana Local Elections
Tue Sep 9, 2025 - Montana Municipal Primary Election
Voter Registration Deadline
- Postmarked by
Registration forms postmarked by this date and received within 3 days are accepted for regular registration.
Mon Aug 11, 2025 - Submitted by
Mon Aug 11, 2025 - Late Registration: Must be received and verified by
Tue Sep 9, 2025 5:00PM
Absentee Ballot Request Deadline
- Received by
Mon Sep 8, 2025 12:00PM - Emergency Ballot Period
Voters with an illness or health emergency between Friday 5 PM before the election and before the close of polls on election day may request an absentee ballot. Contact your Local Election Office.
From Fri Sep 5, 2025 to Tue Sep 9, 2025
Absentee Ballot Return Deadline
Received byTue Sep 9, 2025 8:00PM
Early Voting Available
In-person Absentee VotingFrom Sun Aug 10, 2025 to Mon Sep 8, 2025
Montana Federal and State Elections
Montana Local Elections
Tue Sep 9, 2025 - Montana Municipal Primary Election
Voter Registration Deadline
Received byTue Sep 9, 2025 8:00PM
Absentee Ballot Request Deadline
Received byTue Sep 9, 2025 8:00PM
Absentee Ballot Return Deadline
- Postmarked On or Before Election Day and Received by
This is the deadline for submitting a federal write-in absentee ballot (FWAB).
Tue Sep 9, 2025 3:00PM - Email, Online or Fax by
Tue Sep 9, 2025 8:00PM - Received by
Tue Sep 9, 2025 8:00PM
Go to the Sample Ballot Lookup for candidate names and to learn of any ballot measures and proposed state constitutional amendments on your ballot.
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