Pre-18 voter registration in
Montana
In Montana 13,935
people turn 18 every year.
Montanans can 
pre-register before turning 18.
To register to vote in Montana, you must be: 18 by Jun 2nd, 2026. That means most eligible seniors and some juniors in your high school can register to vote today and vote at 18.
High school students can help one another get ready to vote. 
Next Steps!
How to Register to Vote in Montana
Upcoming Elections:
- Jun 2nd, 2026 - Montana Primary Election (Register by May 4th, 2026 by mail)
- Nov 3rd, 2026 - Montana General Election (Register by Oct 5th, 2026 by mail)
Useful Links:
- Registration Form - Download the paper registration form for Montana.
- Registration Status - Check if you are already registered, your polling place, and more from your state’s voter registration website.
- Fair Elections Center - Learn about conducting a registration drive in Montana.
- Vote 411 - A nonpartisan resource to help you register, preview your ballot, and find key election information from the League of Women Voters.
- VoteRiders - Find out what forms of ID you can use to register and vote, and get help getting a valid form of ID.
Full Registration Details
By Mail: ID Requirements
You must provide your Montana driver's license number, Montana ID card number, or the last 4 digits of your Social Security number. If you have not been issued any of these numbers, indicate “NONE” in the identification number box and include a copy of ONE of the following: United States passport; Montana tribal ID card; military ID card; Montana concealed carry permit; photo identification, including, but not limited to, a school district or postsecondary education photo identification with your name AND a current utility bill, bank statement, paycheck, government check, or other government document that shows your name and current address
By Mail: Eligibility Requirements
To register in Montana you must:
be a United States citizen
be at least 18 years old on or before the election
be a resident of Montana and of the county in which you want to vote for at least 30 days before the next election
not be in a penal institution for a felony conviction
not currently be determined by a court to be of unsound mind
By Mail: New Voter Instructions
If you are registering to vote for the first time in your jurisdiction and are mailing this registration application, federal law requires you to show proof of identification the first time you vote. Proof of identification includes: current and valid photo identification OR current utility bill, bank statement, government check, paycheck or government document that shows your name and address. More information here.
More information here.
Montana High School Educators!!!
Support your students’ voter registration effort with our free toolkit.
About this information
This page presents a curated compilation of voting and election information, specifically geared toward high school students, their families, and educators.
Information about deadlines and voting laws is retrieved via the Democracy Works Elections API and was last retrieved on Mar 30th, 2026; the API compiles election guidance from official government sources and other vetted data providers, and details may change over time. Information concerning requirements for high schools is based on The Civics Center’s analysis of State Requirements for High School Voter Registration and was last updated on Mar 27th, 2026.
See More
Information about youth turning 18 each year is from the U.S. Census, and information on the number of 18-year-olds who have not yet registered is based on applying TCC’s analysis of Census data and state voter files. We also provide links to trusted resources, including VoteRiders (for voter ID information) and Fair Elections Center (for information about laws governing voter registration drives).
These pages are offered for guidance only and are not intended as legal advice. Please consult state election officials or an attorney if you have questions about any particular situation. We hope you find this useful. To cite our resources and original research, please provide links and/or cite The Civics Center.
© 2026 The Civics Center
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