Elections
The Oklahoma 2026 congressional primary was held on June 16, 2026. General Election Day is November 3, 2026.
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See Oklahoma's current congressional delegation
Term end dates, party breakdown, and which seats are on the November ballot.
Primary Runoff · August 25, 2026
General Election · November 3, 2026
Quick Answer
Open seat (Mullin resigned for DHS secretary). Kevin Hern won the Republican nomination outright with 69.8%. No Democrat cleared 50%, so N'Kiyla Thomas (45.2%) and Jim Priest (23.9%) advance to an Aug. 25 runoff.
No candidate cleared the threshold outright. A runoff is scheduled for August 25, 2026 to determine the nominee.
All U.S. House seats in Oklahoma are on the 2026 ballot. Every House member runs for re-election every two years. View Oklahoma representatives →
Oklahoma's Class II Senate seat is up for election in 2026. The current senator is James Lankford (R). Class II senators were last elected in 2020 and serve six-year terms.
Oklahoma holds a closed primary, meaning you must be registered with a political party to vote in that party's primary. Independent and unaffiliated voters cannot participate unless they re-register with a party before the registration deadline.
| June 16, 2026 | Primary Election (passed) |
| August 25, 2026 | Primary Runoff — if needed |
| October 2026 | Voter registration deadlines (check your state) |
| November 3, 2026 | General Election |
| January 3, 2027 | 120th Congress convenes |
You must be registered with a political party to vote in that party's primary. Independent/unaffiliated voters cannot participate unless they re-register before the deadline. Registration deadlines vary — most states require registration 15–30 days before the primary, though some offer same-day registration.
Check your registration status and find your polling place at vote.gov.
See All State Primary Dates
Compare Oklahoma's primary to other states' 2026 schedules.
Open seat (Mullin resigned for DHS secretary). Kevin Hern won the Republican nomination outright with 69.8%. No Democrat cleared 50%, so N'Kiyla Thomas (45.2%) and Jim Priest (23.9%) advance to an Aug. 25 runoff.
The Oklahoma 2026 congressional primary is June 16, 2026. If no candidate wins the required threshold, a runoff will be held on August 25, 2026. The general election is November 3, 2026.
Oklahoma holds a primary runoff on August 25, 2026. A runoff is triggered when if no candidate wins a majority (50%+1). The runoff is between the top two finishers from the original primary.
You must be registered with a political party to vote in that party's primary. Independent/unaffiliated voters cannot participate unless they re-register before the deadline.
All U.S. House seats in Oklahoma are on the 2026 primary ballot. Additionally, the U.S. Senate seat (Class II) is up for election. The current senator is James Lankford (R). Many states also hold primaries for governor and state legislature on the same day.
Oklahoma holds a closed primary, meaning you must be registered with a political party to vote in that party's primary. Independent and unaffiliated voters cannot participate unless they re-register with a party before the registration deadline.
Voter registration deadlines vary but are typically 15–30 days before the primary. Because Oklahoma has a closed primary, you must also be registered with a party before the deadline to vote in a party primary. Check the Oklahoma Secretary of State website or vote.gov for the exact deadline.
The 2026 general election is on Tuesday, November 3, 2026. This date is the same for all 50 states — it is always the first Tuesday after the first Monday in November in even-numbered years.
