Incumbent Thomas Massie defeated challenger Todd McMurtry in the Republican primary for Kentucky’s 4th Congressional District. As of 9:30 p.m. Eastern Time, Massie had received 88.2% of the vote to McMurtry’s 11.8%. McMurtry was Massie’s first primary challenger since he was elected in 2012. Election forecasters project Massie is a solid favorite to defeat the Democratic nominee in November.