Important dates for Montana’s 2026 primary and general elections — filing deadlines, voter registration, absentee ballots, and election days.
Primary Election
- Feb 17, 2026Candidate Filing Opens
- Mar 9, 2026Candidate Filing Deadline
- May 4, 2026Close of Regular Voter Registration (Primary)
- May 8, 2026Absentee Ballots Mailed (Primary)
- Jun 1, 2026Absentee Ballot Application Deadline (Primary)
- Jun 2, 2026Montana Primary Election
- Jun 2, 2026Primary Polls Close
General Election
- Oct 5, 2026Close of Regular Voter Registration (General)
- Oct 9, 2026Absentee Ballots Mailed (General)
- Nov 2, 2026Absentee Ballot Application Deadline (General)
- Nov 3, 2026Montana General Election
- Nov 3, 2026General Polls Close