The 2028 Republican presidential primaries and caucuses, which will select delegates for the 2028 Republican National Convention, are set to take place across all 50 states, Washington, D.C., and five U.S. territories, though no dates have been determined. Incumbent President Donald Trump is constitutionally barred from seeking a third term under the Twenty-second Amendment, and if no Trump family member runs, it will mark the first Republican primary since 2012 without a Trump on the ballot. Declared candidates include Dan Greaney, a TV writer and Harvard graduate who penned the 2000 Simpsons episode "Bart to the Future" that predicted Trump's presidency, and former NBA player Royce White, who announced his bid on August 12 after losing a 2026 Senate primary. Additionally, Gregory Bovino, a former U.S. Border Patrol commander, has formed an exploratory committee, while prominent figures like Texas Senator Ted Cruz (runner-up in 2016) and Florida Governor Ron DeSantis (a 2024 candidate) have expressed interest. Cruz recently traveled to early primary state Iowa in May 2026, fueling speculation about a potential run, and DeSantis is exploring another bid despite being term-limited as governor.