The mid-decade redistricting war that began in Texas and California has spread to the Midwest — with very different outcomes in two neighboring states. Ohio locked in a map that strengthens Republicans for 2026, while Indiana’s attempt collapsed and triggered a political purge of the lawmakers who killed it.
Ohio’s locked-in map
On October 31, 2025, the Ohio Redistricting Commission unanimously approved a new congressional map for 2026 — and it is now fixed until 2032. The map is designed to shift Ohio’s delegation from a 10-5 Republican majority toward 12-3 by making the districts of Democrats Greg Landsman (OH-1) and Marcy Kaptur (OH-9) more competitive. Two seats that leaned blue are now firmly in play, a meaningful prize in the fight for the House.
Indiana’s collapse
Indiana went the other way. Governor Mike Braun called a special session to redraw the state’s maps after pressure from the Trump administration — including visits from Vice President JD Vance — to pad the GOP’s advantage. But on December 11, the proposal failed in the State Senate, with 21 Republicans joining all 10 Democrats to reject it. A redraw that national Republicans badly wanted died in their own party’s chamber.
The price of defiance
The rebellion came at a cost. President Trump threatened to back primary challengers against any Republican who opposed the redraw — and followed through. In 2026, at least five of the seven Republicans who voted against redistricting lost their renomination. It is a stark demonstration of how party discipline is now enforced: defy the leadership on maps, and face a primary you may not survive.
Why it matters
Mid-decade redistricting — once rare — has become a partisan weapon deployed wherever a party can muster the votes. Ohio’s locked map could net Republicans seats that help decide House control; Indiana shows the limits when even some in the party balk. And the primary purge reveals how redistricting fights double as loyalty tests, reshaping not just maps but who holds power within the party.
The national picture
These battles unfold against the Supreme Court’s Callais ruling, which weakened Voting Rights Act guardrails and emboldened aggressive redraws. With states redrawing lines whenever power allows, the country edges toward a norm where maps are rewritten continuously — and voters’ representation shifts with each round.
The bottom line
Ohio’s 12-3 map and Indiana’s failed redraw — plus the ousting of the Republicans who blocked it — capture how redistricting has become a relentless, high-stakes weapon in 2026. The lines being drawn now will shape House control and, increasingly, who survives within their own party.
