Gentner Drummond

Oklahoma voters head to the polls in runoff elections deciding the Republican nomination for governor and the Democratic nomination for U.S. Senate, alongside two statewide ballot measures. State Attorney General Gentner Drummond and former state Sen. Mike Mazzei, who narrowly split the June 16 primary vote, face off for the GOP gubernatorial nod; the winner will meet Democratic state House Minority Leader Cyndi Munson in November, with Democrats not having won the governorship in 20 years. Mazzei has self-funded heavily and drew President Trump's endorsement, while Drummond has outraised him in contributions—another test of Trump's mixed 2026 primary endorsement record.

On the Democratic side, nurse N'Kiyla Jasmine Thomas and attorney Jim Priest are competing for the Senate nomination after neither cleared 50% in June; Priest holds a large fundraising edge. The winner faces Republican Rep. Kevin Hern, who won his primary outright. Voters also decide State Question 846, adding a voter ID requirement to the constitution, and State Question 844, concerning property tax reimbursements tied to manufacturing incentives.