Summary (tl;dr)

Mike Mazzei has secured the Republican nomination for Oklahoma Governor in the August 25, 2026, primary runoff election, largely boosted by an endorsement from former President Donald Trump. N'Kiyla Jasmine Thomas also won the Democratic primary runoff for U.S. Senate.

Essential Background

Oklahoma held its primary elections on June 16, 2026. In races where no candidate achieved over 50% of the vote, runoff elections were mandated to determine the party nominees. The governorship was an open seat as incumbent Republican Governor Kevin Stitt was term-limited. The Republican primary for governor was particularly competitive, with nine initial candidates, leading to a runoff between State Attorney General Gentner Drummond and former state senator Mike Mazzei, who had narrowly placed second in the initial primary.

The Full Story

On August 25, 2026, Oklahoma voters headed to the polls for primary runoff elections across the state. The most prominent race was the Republican gubernatorial nomination, where Mike Mazzei defeated Gentner Drummond. Mazzei's victory followed significant support from former President Donald Trump, who endorsed Mazzei and publicly criticized Drummond. In the Democratic primary runoff for the U.S. Senate, N'Kiyla Jasmine Thomas emerged victorious over Jim Priest. These runoffs also decided nominations for various other state and local offices, and voters considered two statewide ballot measures. The Oklahoma State Election Board oversaw the tabulation and announcement of these results.

Why It Matters

The outcome of the Republican gubernatorial runoff is highly significant because, in the deeply conservative state of Oklahoma, the Republican nominee is historically favored to win the general election; a Democrat has not won the governorship in 20 years. Mazzei's win also serves as a notable test of former President Trump's continued influence and endorsement power within Republican primary contests. These results set the stage for the general election on November 3, 2026, which will determine key leadership positions and shape Oklahoma's political direction for the coming years.

Geographic Location

• Oklahoma, United States (statewide primary runoff elections held on August 25, 2026)
• Oklahoma City, Oklahoma County, Oklahoma, United States (location of the Oklahoma State Election Board, overseeing the compilation and announcement of election results)
• Tulsa, Tulsa County, Oklahoma, United States (site of a gubernatorial candidate debate)