Republican Representative Andy Biggs won Arizona's GOP gubernatorial primary with Donald Trump's backing, extending the president's unbroken run of successful endorsements in the 2026 primary season. The victory reinforces Trump's continued dominance over the Republican Party, with commentators describing the GOP as having effectively become the "MAGA party" under his influence.

The win sets up a high-stakes general election battle in November, as Democrats have re-nominated the incumbent Arizona governor for the race. The article also notes that Trump's sway extended to Texas, where former Senator John Cornyn lost his primary to Trump-endorsed Ken Paxton, further demonstrating the president's grip on Republican primary contests nationwide.