Ed Gallrein, a former Navy SEAL backed by President Donald Trump, defeated incumbent Rep. Thomas Massie in a Republican primary Tuesday in Kentucky's 4th congressional district, the latest in a series of successful attempts by the president to pick off his political opponents.

The Associated Press, NBC News and other outlets called the race Tuesday night less than two hours after the first polls closed. Massie was down nearly nine percentage points at the time the race was called.