President Donald Trump has scored another win against a Republican rival, purging Rep. Thomas Massie in Kentucky’s primary and knocking out one of his most outspoken critics on Capitol Hill. Massie has been a particularly difficult thorn in Trump’s side. He pushed for the release of the Jeffrey Epstein files, opposed the war with Iran and voted against Trump’s signature tax legislation last year. He lost Tuesday to Trump-backed challenger Ed Gallrein following the most expensive U.S. House primary in history. Party primaries were also being decided in Alabama, Georgia, Idaho, Oregon and Pennsylvania.