President Donald Trump's effort to redraw congressional maps in Republican-controlled Southern states ran into serious trouble on Tuesday, Trump redistricting as both Alabama and South Carolina delivered defeats to the plan on the same day. The twin setbacks mark the most significant resistance yet to a White House strategy aimed at securing a stronger House majority heading into the 2026 midterm elections.

In South Carolina, several Republican state senators crossed party lines and joined Democrats to block a proposed map designed to dismantle the congressional district held by James Clyburn, the 85-year-old Black Democrat who has represented the seat for more than three decades. The rare Republican defection came even after Governor Henry McMaster, bowing to earlier White House pressure, called lawmakers back for a special session to push the map through.

In Alabama, a federal three-judge panel ruled that a Republican-backed redistricting plan intentionally discriminated against Black voters and could not be used for the 2026 elections. The court ordered the state to continue using a map that preserves two congressional districts with significant Black populations a direct rebuke to state Republicans who had sought to reduce that number to one.

South Carolina's map fails for the second time as votes were already being cast

The proposed South Carolina map would have allowed Republicans to potentially sweep all seven of the state's U.S. House seats by breaking apart Clyburn's majority-Black district. Tuesday's failure was actually the second time the effort collapsed in the state Senate an earlier vote earlier this month also fell short of the two-thirds majority required to advance it.

The timing made the situation even more politically complicated. Early voting in South Carolina's party primaries had already begun on Tuesday, with tens of thousands of ballots recorded by midday. Several Republican senators who voted against the map cited the legal danger of redrawing districts after voting had started, calling it constitutionally unprecedented and ripe for court challenges.

"As far as I can tell, there is no historical precedent for a legislature to change the date of an election and redraw the maps once voting has begun." Senator Richard Cash

Republican senators who broke with Trump on the vote face potential political fallout, though none of them face reelection until 2028. The outcome stands in contrast to Indiana, where several state lawmakers who resisted the president's redistricting demands lost their primaries to Trump-backed challengers just weeks ago a warning that the White House has not forgotten.

Alabama judges find the new map purposefully targets Black voters again

The Alabama ruling carries particular weight because the same three-judge panel had already struck down the same map in 2023 on identical grounds. Two weeks ago, the U.S. Supreme Court granted Alabama's request to lift that earlier block and directed the panel to reconsider its findings in light of a new April decision that raised the legal bar for challenging maps based on race. The judges reconsidered and reached the same conclusion anyway.

The disputed map targets a congressional district where Black residents make up just under 50 percent of the population. Black people account for roughly a quarter of Alabama's total population, and the district is currently represented by congressman Shomari Figures. The panel wrote that it could not require Alabamians to vote under "a districting plan tainted by intentional race-based discrimination" a strikingly direct condemnation.

Alabama officials immediately announced plans to appeal to the U.S. Supreme Court, which has a conservative majority and delivered the April ruling that weakened racial protections in the first place. The appeal means the legal battle over Alabama's congressional map is far from over, and its ultimate outcome could shape redistricting litigation across the entire South.

How the redistricting fight reached this point the decisions that led here

The current wave of Southern redistricting was triggered by a U.S. Supreme Court decision in April that weakened legal protections for congressional districts with significant Black or Latino populations. Trump quickly urged Republican-controlled state legislatures to take advantage of the ruling and redraw maps before the 2026 midterms framing it as a partisan opportunity rather than a racial one.

Tennessee moved first and approved a new map that broke up a majority-Black district centred on Memphis. Louisiana is advancing a similar plan to reduce Black-majority districts from two to one. Alabama's original contested map dates to 2023, when the state first attempted to consolidate Black voter influence a move courts blocked then and again now.

South Carolina entered the picture more recently, with its Republican-controlled House passing the Clyburn district map last week. Governor McMaster initially resisted White House pressure to call a special session but ultimately reversed course. The failure of the map on Tuesday twice over now leaves South Carolina's congressional boundaries unchanged going into the primaries.

What the setbacks mean for the broader 2026 midterm map battle

Despite the back-to-back defeats, Republicans are still widely seen as winning the national redistricting fight. Tennessee's map is already in effect, Louisiana's plan is advancing, and the Supreme Court's conservative majority could yet side with Alabama on appeal. Democrats are watching closely, encouraged by Trump's low approval ratings in public polls driven partly by the unpopular Iran war and rising gasoline prices which may blunt any structural advantages Republicans gain through redistricting.

Civil rights groups and Democrats have framed the entire redistricting push as a coordinated effort to dilute Black voting power under the cover of partisan strategy. Republican backers counter that their goal is purely political flipping Democratic-held seats, not engineering racial outcomes. Courts, however, have so far been unconvinced by that distinction in the Alabama case, where the judges found racial intent regardless of how Republicans characterised their own motives.

The coming weeks will determine whether the Alabama appeal gains traction at the Supreme Court and whether any other Southern state attempts a fresh redistricting push before the midterm filing deadlines. For now, Tuesday's twin defeats give Democrats a rare moment of relief in a redistricting cycle that has otherwise moved steadily against them.