Mazzei narrowly defeated state Attorney General Gentner Drummond, who Trump had attacked and labeled as a “fake Republican.”

Trump-backed Mike Mazzei finished the primary less than one percentage point behind Gentner Drummond, who has disagreed with Trump on tariffs.

Tulsa businessman Mike Mazzei is hoping to win a hotly contested Republican primary runoff for Oklahoma governor against state Attorney General Gentner Drummond.