The approval of the maps on a party-line vote is likely to prompt California’s Democratic-controlled state Legislature to approve a new map creating five new Democratic-leaning districts.

The court said the petitioners “failed to meet their burden of establishing a basis for relief at this time” under the state’s constitution.

The California Supreme Court on Wednesday rejected a petition filed by state Republican legislators seeking to halt Gov. Gavin Newsom’s (D) plan to redistrict California’s

House Bill 4 advances to the Senate after Democrats return from a quorum-breaking walkout. Republicans aim to reshape the Texas congressional maps.

The Republican-controlled state House in Texas has passed new congressional maps that aim to pad the party’s majority in Washington by as much as five seats in the midterm elections, a move that comes as battles over redistricting spread across the country.

Former President Barack Obama is supporting California Gov. Gavin Newsom's 'measured' approach to redistricting in response to Republican moves in Texas.

The state House has reconvened on Wednesday as GOP lawmakers in the Lone Star State look to push ahead with a newly redrawn congressional map designed for Republicans to pick up five U.S. House seats ahead of the 2026 midterms. The plan, known as House Bill 4, could come to a vote on Wednesday in the House and as early as Thursday in the Senate.

"Trump is trying to steal the 2026 election by rigging the system and changing electoral maps," the event's website states. "We are fighting back."