Ed Gallrein defeated longtime U.S. Rep. Thomas Massie Tuesday in Kentucky's closely watched Republican primary for the 4th Congressional District, while Comer swiftly retained his seat in the state's 1st District race.

President Donald Trump on Friday endorsed Kentucky congressman Andy Barr in the Republican primary for the U.S. Senate seat being vacated by retiring Sen. Mitch McConnell, the former longtime Senate GOP leader.