US Supreme Court settles mid‑decade redistricting, nine states use new districts

The US Supreme Court’s decision last week confirmed that Missouri must retain the congressional map used in the 2024 elections, ending a prolonged legal dispute sparked by President Donald Trump’s push for mid‑decade redistricting.

The Court rejected three attempts to introduce a new Republican‑drawn map for the November 2025 elections, upholding a Missouri Supreme Court ruling that the map could only change after a voter referendum. Federal judges had previously found a post‑primary switch unconstitutional, creating confusion for voters.

Trump’s redistricting campaign succeeded elsewhere. Texas was the first state to adopt new US House districts after the president urged Republicans to act in July 2025. Democratic‑led California followed with its own map to counter potential GOP gains. Subsequent Republican‑led states also redrew boundaries.

In total, new congressional districts are now in effect in Alabama, California, Florida, Louisiana, North Carolina, Ohio, Tennessee, Texas and Utah. All favour Republicans except California and Utah, where the changes could benefit Democrats. If the maps work as intended, Republicans could gain up to nine additional seats.

According to the Associated Press, about one in ten potential voters nationwide will be in a different district for the November election than in 2024, affecting over 6.9 million voters in Texas, 6.3 million in California and more than 4.5 million in Florida. Utah sees 69 % of its voters with new district numbers.

Redistricting also altered districts in Tennessee, where seven of nine seats received new boundaries after changes to the 9th and 5th districts. Future ballot issues in Maryland and Missouri, and legislative moves in Mississippi and New York, could prompt further map revisions before the next presidential election.

Source: ABC News. Photo: Thuan Vo / Pexels.