Jim Priest leads the Oklahoma Democratic Senate primary field as the candidate with the strongest institutional backing, including endorsements from former governors and the state attorney general, along with significantly higher fundraising totals compared to rivals. The open seat stems from Markwayne Mullin’s 2026 resignation to join the Trump administration, creating a low-stakes contest in a solidly Republican state where the nominee faces long odds in November. N’Kiyla “Jasmine” Thomas, a nurse and activist, draws support from progressive and grassroots networks but trails in resources and party connections. Troy Green and others remain marginal, while Rebekah LaVann has withdrawn. With the June 16 primary underway and no public polling available, traders price Priest as the consensus favorite in a fragmented field that could require an August runoff if no candidate secures a majority.