Idaho voter registration closes Oct 23 for the November 3, 2026 election. Every deadline — registration, mail ballot and early voting — with the official source for each.
Look up your own ballot and polling place →
Counties that offer early voting may begin Tuesday, October 13, 2026. Your county's start date may be later. In-person absentee/early voting ends 5 p.m. Friday, October 30, 2026. Early voting is offered at county discretion between Oct 13 and 5 p.m. Oct 30, 2026. Check your county clerk for dates, sites and hours.
Pre-register online by 5 p.m. local time Friday, October 23, 2026 (11 days before the election). Your county clerk must receive your mailed form by 5 p.m. Friday, October 23, 2026. Forms received later are held until after the election.
Your county clerk must receive your absentee ballot application by 5 p.m. Friday, October 23, 2026.
After Oct 23 you can still register in person when you vote early or at your polling place on Election Day (bring photo ID and proof of residence). Register in person when you vote early or at your polling place on Election Day. You need a current photo ID and proof of residence.
Your county clerk must receive your voted absentee ballot by 8 p.m. on Election Day. A postmark does not count.
We publish a gap rather than a guess. These points were not settled by an official source:
Every date above was read from the Idaho election office's own published material, last checked Tuesday, September 15, 2026. Confirm anything you are relying on with your local election authority.
https://voteidaho.gov/calendar/
Preregistration Deadline October 23 Voter registrations must be received by the county clerk by 5 p.m. local time — for the Nov. 3 election.
https://legislature.idaho.gov/statutesrules/idstat/title34/t34ch4/sect34-408/
No elector may register in the office of the county clerk after 5:00 p.m. on the eleventh day before any election held throughout the county in which he resides for the purpose of voting at such election
https://voteidaho.gov/voter-registration/
You may also register when you vote in person at early voting or on Election Day.