Welcome to Ballot Without Borders for Jefferson County, Idaho. Local election information, voting resources, and community updates for Jefferson County will be added here after they are checked against official local and Idaho election sources.
2026 General Election in Jefferson County
Candidates who received the most votes in Jefferson County (unofficial, AP county results, checked Nov. 4, 2026):
- U.S. Senate: Risch (R)
- Governor: Little (R)
These are statewide races, so this shows who led in Jefferson County, not a local winner. Statewide, Jim Risch (R) won the U.S. Senate race and Brad Little (R) won the governor’s race, according to AP race calls. Results are unofficial until certified.
Voting in Idaho: Rules for Jefferson County Voters
Voting rules are set by each state. This is a summary of Idaho rules for Jefferson County voters, checked Nov. 4, 2026, from Vote.gov (U.S. government), the National Conference of State Legislatures (NCSL) and Ballotpedia. Rules and dates can change, so confirm with Idaho’s official election website or your local election office before each election.
Registering to vote
- Online: by 11 days before Election Day.
- By mail: must be received 11 days before Election Day.
- In person: available through Election Day (same-day registration).
- Register or check your registration (Idaho on Vote.gov)
Primary elections
Idaho parties set their own rules: the Democratic primary is open to all voters, and the Republican primary is closed to registered Republicans. Unaffiliated voters can affiliate with a party on primary day.
Voter ID
Idaho asks voters to show a photo ID. If you don’t have one, there are other ways to cast a ballot that counts, such as being identified by a poll worker or signing an affidavit, depending on state rules.
Early voting
Starts: On or after the fourth Monday before election (in-person absentee). Ends: 5 p.m., Friday before election. Locations and hours are set locally.
Voting by mail
Any Idaho voter can request an absentee/mail ballot. No excuse is needed.
Jefferson County election office
Jefferson County Clerk
210 Courthouse Way Ste 100
Rigby, ID 83442
Phone: (208) 745-7756
Fax: (208) 745-9397
Email: voter@co.jefferson.id.us
You can also look up your local election office on Idaho’s official election website.
Contact information from the Federal Voting Assistance Program’s local election office directory (FVAP.gov, U.S. Department of Defense), checked Nov. 4, 2026. Some listed emails are for military and overseas voters; call the office if you’re not sure who to contact.
Sources: Vote.gov (registration deadlines); NCSL voter ID (updated Sept. 3, 2026), early voting (updated Aug. 11, 2026) and absentee voting (updated July 17, 2026); Ballotpedia primary types (as of Aug. 2026).