James Comer leads the 2027 Kentucky Republican gubernatorial primary field in trader consensus, reflecting his established statewide profile as U.S. representative, prior 2015 primary experience, and recent endorsements from term-limited Secretary of State Michael Adams and Agriculture Commissioner Jonathan Shell. Potential challengers including Thomas Massie and Savannah Maddox have signaled interest but remain focused on their own 2026 races or legislative roles, with limited organization-building to date. Lesser-known candidates such as Brett St. Amand, Rick Hardin, and Charles “Bruiser” Martin have filed paperwork, while figures like Daniel Cameron and Nate Morris prioritize U.S. Senate contests. The May 2027 primary timeline leaves room for further entries or shifts ahead of the filing deadline.