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Voters head to the polls Tuesday in Ohio and Indiana for a slate of primary elections that will shape critical races for governor, Congress and state legislatures — and offer an early test of Donald Trump’s political influence down the ballot.
While Ohio features marquee contests with national implications, Indiana’s lower-profile state legislative races have drawn unusual attention from Trump, underscoring a broader battle over redistricting and party loyalty.
Indiana: Trump targets GOP holdouts
State Senate primaries in Indiana rarely attract national scrutiny, but this year’s contests have become a proxy fight within the Republican Party.
The focus stems from a failed push to redraw the state’s congressional map to favor Republicans in all nine districts. Currently, the delegation is split 7-2 in favor of the GOP.
A group of Republican state senators resisted pressure from Trump and the White House to support the redistricting effort. Seven of those lawmakers are now on the ballot Tuesday, facing Trump-backed primary challengers.
Trump, alongside Mike Braun, has endorsed candidates seeking to unseat those incumbents. Outside groups aligned with the president have poured money into the races, while the Indiana Senate Republican Caucus has significantly increased its own spending in response.
The outcome could reshape leadership in the chamber. Trump has also targeted Senate President Rodric Bray, though Bray is not up for reelection this cycle. Still, a wave of successful challengers could weaken his position.
Political analysts note the dynamic tension between local ties and national influence in these races, where some incumbents emphasize community connections while challengers lean heavily on Trump’s endorsement.
Ohio Senate: A potential tipping point
In Ohio, the Senate primary is drawing national attention as Democrats look for a pickup opportunity in a closely divided chamber.
Former Sen. Sherrod Brown is seeking a political comeback after narrowly losing reelection in 2024. He faces a primary challenger Tuesday, with the winner advancing to face Republican Sen. John Husted, who was appointed to fill the seat vacated by Vice President JD Vance.
Brown’s candidacy is seen by Democrats as a strong opportunity, given his previous statewide success and relatively narrow loss in a state Trump carried by a wide margin.
Ohio’s 9th District: Longtime incumbent faces new map
In northwestern Ohio, a crowded Republican primary will determine who challenges Democratic Rep. Marcy Kaptur, the longest-serving woman in congressional history.
The district was redrawn in 2025, making it more favorable to Republicans ahead of the midterms. Kaptur narrowly held the seat in 2024 and is expected to face another competitive race in November.
Among the GOP candidates is former state Rep. Derek Merrin, who previously ran against Kaptur, along with several other contenders from government, military and private-sector backgrounds.
Ohio governor: Open race with Trump-backed favorite
Ohio’s gubernatorial race is wide open as term-limited Gov. Mike DeWine cannot seek reelection.
Biotech entrepreneur Vivek Ramaswamy has emerged as the dominant Republican candidate, securing Trump’s endorsement and clearing much of the primary field. He faces limited opposition Tuesday.
On the Democratic side, former state health director Amy Acton is running unopposed in the primary, setting up a general election matchup in November.
Bigger picture
Tuesday’s primaries offer an early look at voter sentiment heading into the 2026 midterm elections, particularly within the Republican Party as Trump seeks to shape races beyond the national level.
In Indiana, the results could signal how much sway Trump holds over state-level Republicans who defied him. In Ohio, the outcomes will help define the battlefield in contests that could influence control of Congress and key governorships.
