Montana Voting Guide
A task-focused dashboard for registration, deadlines, ID rules, ballot tools, and official election authority links for the 2026 midterms.
Not an official government website. Election laws and deadlines can change. Use this guide as a starting point, then confirm legally binding details with the official source links on this page.
State Voting Summary
In Montana, the next general election is scheduled for November 3, 2026. To participate, voters must meet the following registration deadlines — online: No online voter registration option listed by Vote.gov.; mail: Must be postmarked 30 days before Election Day; in-person: Available up to and including on Election Day.
Early voting schedule: Check with Montana Secretary of State Elections & Voter Services for the official early voting schedule in Montana. Availability of advance voting varies by district.. Absentee ballot request deadline: The deadline to request a mail-in ballot varies. Montana Secretary of State Elections & Voter Services has the official dates for Montana.. Ballot return deadline: Whether Montana requires your ballot to be received or just postmarked by Election Day is detailed by Montana Secretary of State Elections & Voter Services..
ID requirement for Montana: First-time voters and regular voters in Montana should confirm their ID requirements with Montana Secretary of State Elections & Voter Services.. Always verify these dates and rules directly with the official Montana election authority before Election Day.
Quick actions
Registration sourcevote.govPolling place sourcesosmt.govBallot information sourcesosmt.govCandidate information sourcesosmt.govVoter Registration
- Online
- No online voter registration option listed by Vote.gov.
- By mail
- Must be postmarked 30 days before Election Day
- In person
- Available up to and including on Election Day
- Eligibility
- U.S. citizen, resident of Montana, and 18 by Election Day; confirm special circumstances with the official source.Verify at official source
Election Dates and Ballot Timing
General Election
November 3, 2026
Primary Election
June 2, 2026
- Primary
- June 2, 2026
- General
- November 3, 2026
- Early voting
- Check with Montana Secretary of State Elections & Voter Services for the official early voting schedule in Montana. Availability of advance voting varies by district.Verify at official source
- Ballot request
- The deadline to request a mail-in ballot varies. Montana Secretary of State Elections & Voter Services has the official dates for Montana.Verify at official source
- Ballot return
- Whether Montana requires your ballot to be received or just postmarked by Election Day is detailed by Montana Secretary of State Elections & Voter Services.Verify at official source
How to Vote and ID Rules
Accepted ID guidance
First-time voters and regular voters in Montana should confirm their ID requirements with Montana Secretary of State Elections & Voter Services.
Verify at official sourceMail voting guidance
Navigating mail voting in Montana requires following the instructions set by Montana Secretary of State Elections & Voter Services carefully.
Verify at official sourceEverything you need to prep and track your absentee ballot securely.
Envelopes
Stamps
Black/blue pens
Small file folder
Calendar/reminder planner
Address labels
Privacy roller stamp
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Ballot and Candidate Tools
Federal races: U.S. House and U.S. Senate.Verified official source
Statewide/local races: Statewide, legislative, judicial, and local offices vary by state and district; confirm your sample ballot with the official election authority.Verify at official source
Frequently Asked Questions
What is the voter registration deadline in Montana for the 2026 midterms?
Vote.gov lists these registration timing rules for Montana: online - No online voter registration option listed by Vote.gov.; by mail - Must be postmarked 30 days before Election Day; in person - Available up to and including on Election Day. Eligibility rules state: U.S. citizen, resident of Montana, and 18 by Election Day; confirm special circumstances with the official source.. Check with Montana Secretary of State Elections & Voter Services for full details.
When does early voting start in Montana?
Check with Montana Secretary of State Elections & Voter Services for the official early voting schedule in Montana. Availability of advance voting varies by district. Keep in mind the primary is June 2, 2026.
Do I need an ID to vote in Montana?
First-time voters and regular voters in Montana should confirm their ID requirements with Montana Secretary of State Elections & Voter Services. Don't forget to check before Election Day.
How do I request an absentee or mail ballot in Montana?
If voting by mail: The deadline to request a mail-in ballot varies. Montana Secretary of State Elections & Voter Services has the official dates for Montana. Whether Montana requires your ballot to be received or just postmarked by Election Day is detailed by Montana Secretary of State Elections & Voter Services. Navigating mail voting in Montana requires following the instructions set by Montana Secretary of State Elections & Voter Services carefully.