Trump Tests Redistricting Muscle in Indiana Primaries
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- Trump has endorsed primary challengers against seven Indiana state Senate Republicans who voted against a new GOP-favored congressional map in 2025, despite national party pressure for Indiana to join the mid-decade redistricting wave.
- The Indiana Senate rejected the Trump-backed map, with 21 of 40 Republicans joining 10 Democrats to kill it, even after the state House passed the plan.
- The proposed map would have redrawn Indiana's two Democratic-held U.S. House districts in the GOP's favor, potentially delivering Republicans a 9-0 sweep of the state's House delegation.
- Pro-redistricting groups have spent more than $6 million on ads targeting the seven vulnerable incumbents, according to AdImpact data, turning what would normally be sleepy downballot races into high-dollar fights.
- Trump publicly threatened the holdout senators in a December Truth Social post, saying any Republican who voted against the map would face a "MAGA Primary" and singling out Senate President Pro Tempore Rodric Bray (R).
- Decision Desk HQ's Scott Tranter said the Indiana primaries are a direct test of presidential endorsement power, noting they follow Democrats' successful redistricting referendum in Virginia and a recent Supreme Court Voting Rights Act decision.
Why it matters: Seven Indiana state senators face voters Tuesday after defying Trump's redistricting demands, with more than $6 million in outside spending flooding the race. If Trump's endorsed challengers topple multiple incumbents, it sends a warning to GOP legislators in other states weighing resistance to mid-decade map redraws aimed at protecting the House majority.
