The reinstated map, backed by President Donald Trump, could flip key districts to Republicans.

The US Supreme Court has formally reinstated a redrawn Texas electoral map expected to boost Republican representation in the US House of Representatives, as President Donald Trump’s party seeks to maintain control of Congress in the 2026 midterm elections.

The ruling, issued on Monday, split along ideological lines, with the court’s six conservative justices in the majority and the three liberal justices dissenting.

The map – sought by Trump, approved by the Republican-led state legislature in August 2025, and signed by Governor Greg Abbott – could flip up to five Democratic Party-held House seats to Republicans.

The Supreme Court’s ruling overturned a lower court decision that had blocked the map’s use after finding it was likely racially discriminatory and in violation of constitutional protections.

Trump had urged Republican lawmakers last year to redraw congressional maps to strengthen the party’s position ahead of the November midterms, a push that has since evolved into a broader nationwide battle over redistricting.

Civil rights advocates sharply criticised the decision, arguing that the redistricting weakens the political influence of racial minorities.

“This was an intentional effort to limit the power of Black people and other people of colour,” Damon Hewitt, president and executive director of the Lawyers’ Committee for Civil Rights Under Law, said on Monday.

“This ruling does not erase the facts. Texas dismantled majority-minority congressional districts after the Trump administration urged the state to do exactly that.

“The result is a rigged map that limits the power of voters of colour in a state with a long record of voter suppression,” he added.

Florida proposal escalates redistricting battle

The fight over electoral maps is playing out beyond Texas.

In Florida, Republican Governor Ron DeSantis on Monday proposed a new congressional map aimed at flipping four Democratic-held House seats in the midterm elections.

It remains unclear whether the proposal has enough support in the Republican-controlled legislature to pass. DeSantis has called a special session starting Tuesday to consider the plan.

The map, which DeSantis first shared with Fox News, would likely give Republicans 24 of the state’s 28 US House seats, up from its current 20-8 majority.

Republicans can afford to lose only two House seats in November’s election to retain a majority. A Democratic-controlled House could launch investigations into Trump’s administration while blocking parts of his legislative agenda.

In Virginia, voters last week narrowly approved a Democratic-backed map targeting four Republican incumbents. Republicans have filed multiple lawsuits challenging the measure, and the state’s Supreme Court heard arguments in one such case on Monday.

Any overhaul in Florida would likely face legal challenges. In 2010, voters approved a constitutional amendment barring lawmakers from drawing districts for political gain, a practice known as gerrymandering.

Some Florida Republicans have also raised concerns that an aggressive redraw could leave incumbents exposed in a potential Democratic wave year, as Democrats have outperformed their 2024 margins in dozens of elections since Trump returned to office in January 2025.

Virginia and Florida represent what are likely the final battlegrounds in the redistricting war that Trump initiated last year with Texas.