Oklahoma Republicans are voting today in the gubernatorial primary runoff, with Kalshi’s event-contract market pricing former state Sen. Mike Mazzei at 80% to win the Republican nomination and Attorney General Gentner Drummond at 22%. Polling presents a closer contest: a recent Sooner Survey cited by 270towin.com found the candidates tied at 44% among likely runoff voters, with 12% undecided and a 4-percentage-point margin of error. President Donald Trump endorsed Mazzei in the initial primary and has continued backing him in the runoff, after Drummond finished 0.28 percentage points ahead of Mazzei in June, with both receiving about 26% of the vote. The result is being watched as another gauge of Trump’s political influence after five of his gubernatorial picks in open primaries lost this cycle. Mazzei’s campaign paid longtime Trump ally and political consultant Roger Stone’s Drake Ventures $82,500 through Aug. 10. Trump has criticized Drummond over his opposition to a planned aluminum smelter and called him a "FAKE Republican" on Truth Social.