Pre-18 voter registration in
Idaho
In Idaho 28,582
people turn 18 every year.
Idahoans can 
pre-register before turning 18.
To register to vote in Idaho, you must be: 18 by May 19th, 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 Idaho
Upcoming Elections:
- May 19th, 2026 - Idaho Primary Election (Register by May 8th, 2026)
- Nov 3rd, 2026 - Idaho General Election (Register by Oct 23rd, 2026)
Useful Links:
- Registration Form - Download the paper registration form for Idaho.
- 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 Idaho.
- 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
When registering by mail in Idaho, you need an Idaho Driver’s License number or the last four digits of your Social Security number. If you registered to vote on or after July 1, 2023, and you do not have an Idaho-issued ID or your residence does not match the address on your ID, you must provide proof of residence to your county elections office or at the polls. Proof of residency documents must be current and include the address you wish to use when registering. Acceptable forms can include (but are not limited to) an Idaho Driver’s License or Idaho ID card, US federal photo ID, Tribal ID card, Concealed Weapons License issued by an Idaho county sheriff, proof of insurance, mortgage, or rental agreement, utility bill (excluding cell phone bills), bank or credit card statement, paystub, paycheck, or government-issue check.
By Mail: Eligibility Requirements
To register in Idaho you must:
be a United States citizen
have resided in Idaho and in the county for 30 days prior to the day of election
be at least 18 years old
not have been convicted of a felony, and without having been restored to the rights of citizenship, or confined in prison on conviction of a criminal offense
By Mail: New Voter Instructions
If you are registering for the first time in your jurisdiction and are mailing this registration application, you must show an approved form of photo ID as proof of identification when you vote. You may also need to provide an approved form of proof of residence the first time you vote if you did not include it with your registration application. Proof of residency documentation must include the current name and address you use to register to vote. Acceptable forms include but are not limited to: Idaho driver’s license, Idaho ID card, US passport or federal ID, tribal ID card, or concealed weapons license issued by a county sheriff in Idaho. Visit the Idaho Secretary of State website for more information about proof of identity and proof of residence: https://tvote.org/idaho_id
Online Instructions
You need an Idaho ID to use Idaho's online voter registration system. If your residence does not match the address on your ID, you are required to provide proof of residence. Acceptable forms include (but are not limited to): proof of insurance; mortgage, lease, or rental agreement; utility bill (excluding cell phone); bank or credit card statement; paystub or paycheck; and enrollment letter from an Idaho high school or university. If you don’t have an Idaho DMV-issued ID, you can still submit a voter registration application by mail or in person.
More information here.
Idaho 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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