Trump-backed challengers defeated five Indiana GOP state senators who opposed his redistricting push, underscoring his influence in Republican primaries.
President Donald Trump’s push to punish Indiana Republican state senators who blocked his redistricting effort delivered a clear victory Tuesday, as five Trump-endorsed challengers defeated GOP incumbents in state Senate primaries.
The contests became an early test of Trump’s influence over Republican nomination fights ahead of the midterms. Eight state senators who opposed the redistricting bill faced primary challenges; Trump endorsed challengers to seven of them. Of those seven races, five challengers won, one incumbent survived and one race remained undecided as of early Wednesday morning.
The primary defeats followed a December vote in the GOP-dominated Indiana Senate, where Republicans rejected a congressional redistricting plan backed by Trump and his allies. The plan would have given solidly red Indiana two additional right-leaning U.S. House seats before the midterm elections.
Trump and allied Republicans treated the Indiana races as a loyalty test and an organizational show of force. Republican Sen. Jim Banks of Indiana, a close Trump ally who was involved in the effort against the incumbents, said the results sent a message to the state party.
“Everyone in Indiana politics should have learned an important lesson today: President Trump is the single most popular Republican among Hoosier voters,” Banks said in a statement as results came in.
Outside groups aligned with Banks and Trump’s political operation spent heavily to defeat the incumbents. A Republican source familiar with the effort told Fox News Digital that more than $8 million was spent on television and digital advertising by American Leadership PAC and Hoosier Leadership for America, two groups aligned with Banks and steered by Trump strategist Andrew Surabian. The source said planning began in February and that Trump operatives were responsible for most of the money raised and spent by the groups.
Indiana Gov. Mike Braun also donated several hundred thousand dollars to the effort, while the political arm of Turning Point USA and the Club for Growth backed the president’s side in the intraparty fight.
The incumbents were not without help. They significantly outraised their challengers and were supported by the Indiana Senate GOP caucus. But the pro-Trump spending and turnout operation proved decisive in most of the targeted races.
Veteran Republican strategist Marc Short, who served in Trump’s first administration and was a longtime adviser to former Vice President Mike Pence, described the Indiana fights as contests over loyalty to Trump. “The resources that he can bring to a state Senate race are overwhelming,” Short told Fox News Digital.
The Indiana results give Trump a strong opening in a series of coming primaries where his endorsement power will again be measured. In Louisiana, Sen. Bill Cassidy faces Republican primary challenges from Rep. Julia Letlow, whom Trump has endorsed, and former Rep. John Fleming, now the state treasurer. If no candidate receives more than 50% of the vote, the top two finishers will advance to a June 27 runoff.
Another test is set for May 19 in Kentucky’s 4th Congressional District, where Rep. Thomas Massie, one of Trump’s most vocal Republican critics in Congress, faces Trump-backed challenger Ed Gallrein. Trump has also endorsed Georgia Lt. Gov. Burt Jones in the state’s Republican gubernatorial primary that same day.
Still, Tuesday’s elections also included a warning sign for Republicans beyond Indiana. In Michigan, Democrat Chedrick Greene defeated Republican Jason Tunney in a special election for a competitive state Senate seat, continuing a run of Democratic overperformance in special and off-year contests since Trump returned to the White House.
For now, Indiana showed that Trump’s endorsement can still reshape lower-profile Republican primaries when paired with sustained outside spending and organization. The next question is whether that same formula carries into higher-profile races in Louisiana, Kentucky and Georgia.
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