Six states hold primaries Tuesday. The most notable race is in Kentucky, where President Donald Trump is targeting Rep. Thomas Massie in what could become the most expensive House primary in history.
Georgia Gov. Brian Kemp faces a major test with his endorsement of political newcomer Derek Dooley for Senate against more Trump-aligned candidates.
The races will also determine whether Republicans who stood up to Trump after January 6 can extend their political careers in Georgia.
AI-generated summary was reviewed by a CNN editor.
Tuesday brings one of the busiest primary days of the 2026 calendar year, with six states holding nominating contests.
