Montana primary election

September 9, 2025

Election type: primary
Region: Montana
Description: Montana local primaries

Visit Ballotpedia.org(Opens in a new window) to learn what you're voting on this election.

Key deadlines in Montana

Voter registration deadlines

By mail: Postmarked by 30 days before Election Day
In person: Election Day (via same-day registration)

Absentee ballot request deadlines

By mail: Received by 1 day before Election Day at 12PM
In person: 1 day before Election Day at 12PM

Absentee ballot return deadlines

By mail: Received by Election Day
In person: Received by Election Day

Voting dates

Early voting starts: 30 days before the election
Early voting ends: 1 day before Election Day
Election Day: September 9, 2025

Questions about voting in Montana

When is Election Day?

Can I vote early?

Where do I vote?

What type of ID do I need to show when I vote?

Can I use my student ID as identification when voting?

Can I have a ballot mailed to me?

I have a ballot. How do I return it?

How do I know if I'm registered to vote?

Can I register to vote on Election Day?

I've moved. Do I have to update my registration?

How do I vote if I'm in the military or overseas?

What if I have other questions?