GOP primary

Colorado Attorney General Phil Weiser won the Democratic nomination for governor, defeating U.S. Sen. Michael Bennet. The race focused on which candidate had challenged President Donald Trump more effectively. Weiser is favored to win in November in the blue state, with the Republican primary featuring Scott Bottoms, Barbara Kirkmeyer, and Victor Marx.

Rep. Jeff Hurd was projected to win the GOP primary for his House seat in the 3rd Congressional District despite President Trump reversing his endorsement earlier this year. Trump withdrew his endorsement, criticizing Hurd for insufficient support of his tariff agenda and instead endorsing Hope Scheppelman.

Rep. Nancy Mace faces potential elimination in her governor bid as President Trump supports Lt. Gov. Pamela Evette in South Carolina's GOP primary. The primary's outcome will test Trump's influence in the state.

Voters in Iowa are participating in the gubernatorial primary election to determine the candidate who will succeed outgoing Gov. Kim Reynolds. The GOP primary features Rep. Randy Feestra (R), state Rep. Eddie Andrews, farmer Zach Lahn, former state Rep. Brad Sherman, and others.

Rep. Thomas Massie, after losing Kentucky's GOP primary to Trump-backed Ed Gallrein, has filed for the 2028 House race and stated he will remain politically active. He claims he won't 'go away silently' and hints at ongoing efforts to counter narratives about his congressional tenure.