2026 United States Senate election in Oklahoma

For related races, see 2026 United States Senate elections.

2026 United States Senate election in Oklahoma
November 3, 2026 (2026-11-03)
 
Party Republican Democratic
Incumbent U.S. senator

Markwayne Mullin
Republican



Elections in Oklahoma
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The 2026 United States Senate election in Oklahoma is scheduled for November 3, 2026. Incumbent Senator Markwayne Mullin has not announced whether he will seek reelection for his first full term in office.

Background

The 2026 United States Senate election in Oklahoma is scheduled for November 3, 2026. Markwayne Mullin is the incumbent.[1] After former President Donald Trump won the 2024 United States presidential election, Mullin was rumored as a contender for U.S. Secretary of Interior.[2] Mullin's resignation would have affected the open 2026 Oklahoma gubernatorial election and if Mullin resigned Governor Kevin Stitt would have appointed a replacement who must sign a potentially unenforceable[a] oath promising not to run for reelection in 2026.[3] Mullin was not appointed Secretary of Interior.[4]

Republican primary

Candidates

In late 2024, incumbent Markwayne Mullin was rumored as a potential appointee in a second Trump administration, triggering speculation on which Republicans could run for hypothetical open senate seat in 2026.[3]

Potential

Withdrew

  • Tammy Swearington[6]

Declined

Endorsements

Markwayne Mullin

Executive Branch officials

Organizations

Fundraising

Campaign finance reports as of March 31, 2025
Candidate Raised Spent Cash on hand
Markwayne Mullin (R) $2,157,652 $1,680,434 $532,224
Source: Federal Election Commission[11]

Democratic primary

Candidates

Declared

  • N’Kiyla “Jasmine” Thomas[12]

General election

Predictions

Source Ranking As of
Inside Elections[13] Solid R Feb 20, 2025
The Cook Political Report[14] Solid R Feb 13, 2025
Sabato's Crystal Ball[15] Safe R Mar 12, 2025
Race To The WH[16] Safe R Apr 27, 2025

Notes

  1. ^ While state law requires the appointee to sign an oath promising not to run for the following term, federal law may prevent its enforcement. The oath could lead to litigation if an appointee challenges the law.[3]

References

  1. ^ "United States Senate election in Oklahoma, 2026". ballotpedia.org. Ballotpedia. Retrieved November 12, 2024.
  2. ^ Liese, Sarah; Hallum, Katie (November 12, 2024). "Oklahoma Sen. Markwayne Mullin reportedly in running for Trump cabinet post". KGOU. Retrieved November 12, 2024.
  3. ^ a b c d e f g Savage, Tres; Brinkman, Bennett (November 12, 2024). "Domino scenarios: Sen. Markwayne Mullin Cabinet rumor spurs speculation". NonDoc. Retrieved November 12, 2024.
  4. ^ Wahpekeche, Dacoda (November 15, 2024). "Sen. Markwayne Mullin talks possibly being in Donald Trump's Cabinet". KOCO. Retrieved November 16, 2024.
  5. ^ Evans, Murray (December 19, 2024). "What could Ryan Walters do next after being bypassed by Donald Trump? He has options". The Oklahoman. Retrieved December 20, 2024.
  6. ^ "119th Congress - Senate Seats by State". www.thegreenpapers.com. Retrieved May 18, 2025.
  7. ^ Evans, Murray. "AG Gentner Drummond announces bid for Oklahoma governor in 2026 election". The Oklahoman. Retrieved January 17, 2025.
  8. ^ Solender, Andrew (December 9, 2024). "House GOP's tiny majority helps kill a bid for governor". Axios. Retrieved December 9, 2024.
  9. ^ Krehbiel, Randy (May 18, 2025). "Political notebook: Strong income tax receipts keep state revenue on track". Tulsa World. Retrieved May 20, 2025.
  10. ^ "- AIPAC Political Portal". candidates.aipacpac.org. Retrieved April 28, 2025.
  11. ^ "2026 Election United States Senate - Oklahoma". fec.gov. Federal Election Commission. Retrieved April 23, 2025.
  12. ^ Krehbiel, Randy (July 6, 2025). "Political notebook: Rep. John Waldron new state Democratic Party chair". Tulsa World. Retrieved July 6, 2025.
  13. ^ "Senate Ratings". Inside Elections. Retrieved January 14, 2025.
  14. ^ "2026 CPR Senate Race Ratings". Cook Political Report. Retrieved February 11, 2025.
  15. ^ "2026 Senate ratings". Sabato's Crystal Ball. Retrieved February 13, 2025.
  16. ^ "2026 Senate Forecast". Race to the WH. Retrieved March 19, 2025.
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