President Donald Trump’s endorsement decisions for the 2026 midterm cycle continue to center on rewarding Republican loyalty in congressional and state legislative primaries, particularly around redistricting efforts and primary challenges to incumbents who opposed his priorities. In early May, his backed candidates achieved strong results in several Indiana state Senate races, reinforcing patterns of high primary success rates across more than 200 prior endorsements. Traders are closely watching the pending Texas U.S. Senate runoff between John Cornyn and Ken Paxton, where Trump has repeatedly signaled a decision is coming relatively soon but has yet to announce. Upcoming runoffs and remaining spring primaries in multiple states offer the next opportunities for clarification on which contenders will receive his support ahead of the general election.