Mike Mazzei (R-OK) won the Republican primary runoff for Oklahoma governor on Tuesday, Aug. 25, 2026.
The victory secures the GOP nomination for Mazzei, a businessman and former state senator. The result signals the continued influence of Donald Trump over the party's internal selection process in the U.S. heartland.
Mazzei defeated Oklahoma Attorney General Gentner Drummond in a closely contested race. According to reports, Mazzei received roughly 50% of the vote in the runoff [2].
Financial resources played a significant role in the outcome. Mazzei contributed more than $11 million of his own money to the campaign [1]. This self-funding, combined with the endorsement and financial backing of former President Donald Trump, provided a decisive advantage over Drummond.
While most sources identify Mazzei as a former state senator, some reports describe him as a former Oklahoma Budget Secretary. He now moves forward as the official Republican candidate for the governor's office.
The runoff concludes a competitive primary season that pitted a Trump-aligned businessman against a sitting state official. Mazzei's win ensures that the GOP ticket will be led by a candidate closely aligned with the former president's political movement.
“Mazzei received roughly 50% of the vote in the runoff”
Mazzei's victory underscores the potency of combined high-net-worth self-funding and Trump's endorsement within the Oklahoma GOP. By defeating a sitting Attorney General, Mazzei demonstrates that alignment with the former president's brand can outweigh the advantages of current executive office and established state-level legal authority.
