Trump's candidates swept to victory in Indiana's Republican primary Tuesday, defeating at least five of seven incumbent state lawmakers who had defied his demand for new congressional maps. The rout demonstrated that despite sinking approval ratings and internal MAGA divisions over the Iran war, the former president retains ironclad control over core Republican voters.

The spending gap was staggering. Trump and his allies poured roughly $9 million into advertising alone, while the Club for Growth contributed an additional $2 million. One incumbent lost by more than 50 percentage points. The operation, overseen by political director James Blair, weaponized the presidential bully pulpit—Trump posed for Oval Office photos with most challengers.

The outcome signals a warning to Republicans nationwide: fall in line on redistricting or face primary challenges. Whit Ayres, a veteran Republican pollster, observed that Trump continues to dominate the party and its base. The playbook is now replicable—low-turnout state legislative races with minimal outside funding represent fertile ground for Trump's well-financed political operation.