Voting in Idaho
The Idaho political parties host the caucus. There will be locations across the state. You must be Registered with the party to participate.
- Register online by
- October 23, 5pm
- Register by mail by
- October 23, 5pm
- Register in person by
- October 23
- Request a mail ballot by
- October 23, 5pm
- Mailed ballot must arrive by
- November 3, 8pm
See every race and candidate on your Idaho ballot, and where each one stands, before you vote.
Plan your ballot →How to cast your ballot
By mail
Any registered voter may vote by mail — no reason needed.
In person
- Polls open on election day
- 8am – 8pm
- Or vote early
- In the windows shown above
What counts as ID
You will be asked to show photo ID to vote in Idaho.
Acceptable forms include any one of the following:
- Idaho driver's license or Idaho photo ID card
- US passport or federal photo ID card
- tribal photo ID
- license to carry a concealed weapon issued by a county sheriff in Idaho
Voters without ID: If you are unable to provide ID and registered to vote before Election Day, you will be given the option of signing the Personal Identification Affidavit in order to cast a ballot.
Before you can vote
Registering
Ways to register:
Who can register, and what you need
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
Which primary can you vote in?
You may be required to register with a party to participate in Idaho partisan primary elections. Some parties allow unaffiliated voters to vote in their party’s primary. You may also declare your party affiliation at the polls on primary election day.
Also voted on May 19: Alabama, Georgia, Kentucky, Oregon, Pennsylvania.
Dates, deadlines and rules come from DemocracyWorks, last refreshed August 27, 2026; poll hours from our own election guide. Rules change — check with your election office before you rely on a date.
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