Rep. Jim Clyburn, D-S.C., center, joined by House Minority Leader Hakeem Jeffries, D-N.Y., left, stands with members of the Congressional Black Caucus during an event outside the Capitol in Washington, Tuesday, May 19, 2026. (AP Photo/J. Scott Applewhite)

COLUMBIA, S.C. (AP) — President Donald Trump’s push to reshape congressional districts ahead of the November elections suffered a double setback Tuesday, as South Carolina senators declined to do so and a federal court blocked a Republican-backed map in Alabama.

As early in-person voting began Tuesday in South Carolina’s primaries, the state Senate rejected a Republican plan to cancel those congressional votes and instead schedule a new primary under revised districts designed to help the GOP oust a longtime Democrat.

Some senators said it was simply too late to make a change.

“South Carolina citizens are going to the polls today. And neither my conscience or common sense is going to let me stop an election that is already underway,” Republican state Sen. Richard Cash said.

The political drama in South Carolina is part of a Republican strategy — propelled by Trump — to redraw voting districts to the GOP’s advantage in an attempt to hold on to a slim House majority in the midterm elections. Republicans have been moving quickly to try to leverage a recent U.S. Supreme Court ruling that weakened minority protections under the federal Voting Rights Act.

In Alabama, a three-judge federal panel issued a preliminary injunction blocking the state from using a Republican-drawn congressional map that could help the GOP win an additional seat. The court said the plan “intentionally discriminated based on race” by including only one Black-majority district, and it ordered the continued use of a court-imposed map that includes two districts with a significant proportion of Black residents.

Alabama Attorney General Steve Marshall, a Republican, vowed a quick appeal to the U.S. Supreme Court and predicted an eventual victory.

Republicans remain ahead in a national mid-decade redistricting battle. But Democrats, who have suffered their own share of setbacks, praised the turn of events in Alabama.

The “fight for justice is far from over in states across the country where politicians are enacting gerrymanders on top of gerrymanders to erase equal representation for communities of color,” said Marina Jenkins, executive director of the National Redistricting Foundation, a nonprofit affiliate of the National Democratic Redistricting Committee.

Voting districts typically are redrawn after a census at the start of a decade. But Trump has urged Republican-led states to redistrict ahead of the November elections to try to rebuff political headwinds, which typically result in lost congressional seats for the president’s party in midterms.

Since Trump first urged Texas to redraw its voting districts last summer, Republicans also have enacted new House districts in Missouri, North Carolina, Ohio, Florida and Tennessee. Republicans think they could gain as many as 14 seats from those efforts, and perhaps 15 if they eventually win the ability to use a different map in Alabama.

Meanwhile, Democrats think they could win five additional seats from new voter-approved districts in California, plus one more from a new court-imposed map in Utah. Democrats suffered a setback earlier this month in Virginia, where the state Supreme Court invalidated a voter-approved redistricting plan that could have helped Democrats win additional seats.

Redistricting discussions are ongoing in Louisiana following an April high court ruling that struck down a majority-Black congressional district as an illegal partisan gerrymander. The Louisiana House could vote later this week on a new map that could eliminate a seat held by Democratic U.S. Rep. Cleo Fields and improve Republicans’ chances of winning six out of the state’s seven seats.