Republican U.S. Representative Kevin Hern will be Oklahoma's next United States senator. The Associated Press called Oklahoma's U.S. Senate race for Hern on Tuesday night, November 3, 2026, defeating Democrat N'Kiyla “Jasmine” Thomas and keeping the seat in Republican hands. The seat had been empty of an elected senator since March: Markwayne Mullin resigned it to become President Donald Trump's secretary of homeland security, and Governor Kevin Stitt's appointee, oil and gas executive Alan Armstrong, has held it on an interim basis since then, barred by state law from seeking the full term himself. All election-night figures are unofficial until the Oklahoma State Election Board certifies the results.
Decision Desk HQ projected Hern the winner at 8:00 p.m. Eastern, the moment Oklahoma's polls closed, and the count never tightened. In the Associated Press tally, Hern's 498,821 votes to Thomas's 304,805 gave him a lead of 194,016 votes with 1,583 of the state's 1,984 precincts reporting. An earlier state count snapshot, at about 60 per cent reporting at 8:40 p.m. Central, had Hern at 441,549 votes (60.56 per cent) to Thomas's 262,340 (35.98 per cent) — the same comfortable shape from the first returns to the call.
A seat that changed hands twice without an election
The vacancy chain behind this race is unusual. The seat was originally Jim Inhofe's; Mullin won a special election in 2022 to finish Inhofe's term. In March 2026 Trump named Mullin to replace Homeland Security Secretary Kristi Noem; Mullin was confirmed on March 23, 2026 and resigned from the Senate the same day. Governor Stitt announced Armstrong as the replacement on March 24, and Armstrong was sworn in by Senator Chuck Grassley later that day. Under Oklahoma law the appointee had to sign an oath promising not to run in the 2026 election, which is why this was an open-seat race even though a Republican was sitting in it.
Attorney General Gentner Drummond settled the one legal question hanging over the result in an opinion released on Thursday, October 29: because the seat was already on this year's ballot for a full six-year term, the winner is elected both to the remainder of the current term and to the new term, and can take office as soon as the results are certified — Armstrong's appointment ends at that moment rather than on January 3. “Oklahoma law and the U.S. Constitution point to the same answer: the voters fill this seat,” Drummond said. If the election is uncontested, the State Election Board will meet at 5 p.m. on November 10 to certify it. Hern's campaign welcomed the ruling, saying it “ensures Oklahoma will have an elected voice in the Senate without delay.”
Source: Oklahoma Voice, Attorney General opinion on the winner taking office (Oct. 29, 2026)
The winner: engineer, McDonald's franchise owner, four-term congressman
Hern, from Tulsa, has represented Oklahoma's 1st congressional district in the U.S. House since 2018. Before Congress he worked as an aerospace engineer and owned McDonald's franchises, a biography his campaign put at the centre of an “America First” platform listing tax policy, border security, veterans, abortion restrictions, Second Amendment rights, school choice, term limits and a balanced-budget amendment. He carried President Trump's endorsement, and he won the June 16 Republican primary in a landslide — 267,222 votes, 69.8 per cent, against country singer Ty England's 51,875 (13.5 per cent) and three other candidates.
Thomas, a nurse, an active-duty military spouse and a Chickasaw citizen raised in Ardmore, was making her first run for public office. She led the June Democratic primary with 45.2 per cent (76,330 votes) and won the August 25 runoff against attorney Jim Priest with 61.2 per cent (79,229 votes). Her campaign ran on health-care access, the nursing shortage, reproductive rights, education and special education, tribal sovereignty, infrastructure and civil rights. Also on the November ballot were Libertarian Sevier White and independents Curtis Stinnett, a Tulsa pharmacist, and Ron Meinhardt, a Republican running against his own party's nominee.
Source: News 9, Thomas profile and ballot list (State Election Board candidate list)
Every 2026 forecaster — Cook Political Report (Solid R), Decision Desk HQ (Safe R), Inside Elections, NBC News and others — rated Oklahoma safe Republican, and Democrats have not won a Senate election in the state since 1990. The hold therefore changes nothing by itself; what it does is deny Democrats a shock pickup on a night when they needed several. Republicans went into the election holding the Senate 53–47 and the House 219–214, with all 435 House seats and 35 Senate seats on the ballot.
For this site's readers the Oklahoma seat is not distant. Oklahoma City sits at the junction of Interstates 35, 40 and 44 — one of the great freight crossroads of the United States — and Punjabi-American truckers run those corridors daily between Texas, the Midwest and the coasts. The senator Oklahoma sends to Washington votes on the highway and infrastructure funding that maintains those interstates, on the border and commercial-driving rules Hern campaigned on, and on the tax policy he has made his signature issue in the House. A former franchise owner who talks about small-business costs will also be a voice the state's large owner-operator trucking community watches closely.
Source: News 9, Hern platform (border security, tax policy); race background
What happens next
Counting and the county canvass continue, and the State Election Board's certification meeting — set for 5 p.m. on November 10 if the result is uncontested — is the trigger for the handover: on certification, Armstrong's appointment ends and Hern can be sworn in, weeks before the January 3 start of the new term, to serve the remainder of this term and then the full six-year term he won on Tuesday. His move to the Senate will leave his Tulsa-based House seat vacant for the new Congress to reckon with. In Washington he joins a Senate whose final majority will be decided by the night's still-uncalled races in states such as Ohio, Michigan and Texas.
Source: Oklahoma Voice, certification and swearing-in timetable under the Attorney General's opinion