Tuesday's primary elections across Ohio and Indiana offered the first real glimpse of the Republican strategy heading into the fall battle for House control. GOP voters selected nominees in several marquee matchups, with control of the chamber hanging on a razor-thin margin heading toward November.
Former state Rep. Derek Merrin won the Republican primary in Ohio's 9th District, setting up another clash with Democratic incumbent Marcy Kaptur. The district leans Republican on paper, and the GOP has had years to study Kaptur's political operation. Last year's redistricting made the seat even redder, shifting it further right. Yet Kaptur has repeatedly outperformed expectations in previous campaigns, and Republicans have struggled to finish the job against her despite multiple attempts.
The stakes matter considerably. Democrats need only three net House seats to reclaim the majority, giving Republicans little room for error. Any Democratic incumbent they can topple becomes crucial to maintaining control.
In Ohio's 1st District around Cincinnati, Republicans moved quickly to coronate Eric Conroy as their standard-bearer against Democratic Rep. Greg Landsman. Conroy, an Air Force veteran and former CIA employee, carries Trump's backing. This seat became significantly more favorable to Republicans after redistricting shifted it to a district Trump carried by 3 points in 2024.
Not all Republican-held turf improved, however. Ohio's 13th District in the Akron area actually moved leftward during the redistricting shuffle. Democratic Rep. Emilia Sykes holds the seat, which Kamala Harris won by roughly 3 points in 2024. Carey Coleman, a longtime local media personality, emerged as the projected Republican primary winner and will attempt the uphill climb in the fall.
Across the border in Indiana, Republican operative Barb Regnitz, a Porter County Commission member, won her party's nomination to challenge Democratic Rep. Frank Mrvan. The seat sits on a knife's edge politically: Harris won it by less than 1 percentage point. Still, Mrvan has demonstrated staying power in competitive territory, winning re-election repeatedly despite the district's lean.
Primary Night Struggles
Some Republican incumbents emerged from their own primaries looking weaker than party leaders would prefer. Freshman Rep. Jefferson Shreve of Indiana scraped past challenger Sarah Brown by just a few percentage points, despite massive spending advantages. Shreve, who enjoyed Trump's endorsement and poured roughly $2 million of his own money into the race, outraised Brown by enormous margins. Brown, a homeschool advocate and author, managed only $22,000 in fundraising through mid-April yet still came close.
Rep. Jim Baird, also of Indiana and also Trump-endorsed, faced a spirited primary challenge from state Rep. Craig Haggard. Outside groups from both sides dumped money into the race during its final weeks. Baird was projected to win but appeared to be heading toward a sub-60-percent finish, an uncomfortable showing for an incumbent in a primary.
Rep. Victoria Spartz likewise won her Indiana Republican primary Tuesday evening, though she too hovered around 60 percent against challenger Scott King, a relatively unknown political figure. The performance suggests potential vulnerability heading into general election season, even in what should be safe Republican territory.
Author Sarah Mitchell: "Republicans are muscling up for offense where they can, but their own base is sending mixed signals about enthusiasm. Kaptur remains the white whale, but winning primaries narrowly in your own backyard is not the posture of a party feeling confident about November."
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