Oklahoma’s Republican governor primary advances to a runoff between Attorney General Gentner Drummond and former state senator Mike Mazzei. Both candidates finish at the top of a crowded GOP field, according to reporting from NBC and The New York Times. Drummond, a statewide officeholder, secures enough support to move directly into the next round rather than winning outright in the initial primary. Mazzei, who is described as a political newcomer, also qualifies for the runoff and had received President Donald Trump’s endorsement during the race. The runoff determines the Republican nominee for governor for the general election. Sources characterize the initial contest as competitive, with multiple candidates vying for placement. The runoff sets up a direct matchup between Drummond’s established statewide political profile and Mazzei’s backing from Trump and appeal as a challenger, as the race narrows to two candidates.