In the case Louisiana v. Callais the Supreme Court is hearing on if Louisiana lawmakers violated the Constitution when they adopted a new electoral map in 2024 that added a second majority African American district. This district was added after the 2022 when two groups of black voters sued due to there only being one black majority district. In their argument they cited Section 2 of the 1965 Voting Rights Act and a Federal Judge agreed.
In 2024 a new map was used that had this second majority black district however then other groups sued over that landing the whole thing in the Supreme Court. Before a panel of 3 Federal Judges this map though was also struck down. Louisiana appealed and so this map was still used for the 2024 Elections where the Democrats picked up a seat in the new district.
Section 2 of the 1965 Voting Rights Act has been interpreted to require the creation of majority-minority districts and if that is struck down or weakened in the South there could be a pretty dramatic fall out. With Louisiana, Mississippi, Tennessee and North Carolina as the borders for the South Republicans could be able to gain as many as 12 seats across these states if the creation of majority-minority districts are gone. In case you cannot see the article here is a visual representations of what could happen.
This type of redistricting/gerrymandering wouldn't be able to be offset by Democrats because these majority-minority districts are already critical to them.
Using PlanScore, a gerrymandering district ranking site, the vast majority of the either A currently enacted or B currently working to be enacted maps are already extremely partisan favoring the Democrats. It is important to note that the numbers that a lot of these maps use like with Illinois use the 2020 Presidential data not the more current 2024 Presidential Data. For other states that are trying to change to combat Texas's redistricting California's current map is pretty bad and if they enact the one that they are trying to they become the most partisan gerrymandered map beating even the Texas map.
In what seems to be a race to see who can screw over people the most multiple states like Illinois have been publicly hit by these nonpartisan groups who are highlighting how they are already using extremely partisan maps when bashing Texas and other states. California under its new plan (assuming they win the 5 new seats they create as well as keep all swing seats they currently have) would mean 48 Democrats of the 52 total Congressional seats. That is 92.3%, up from 82.7% currently held. In Illinois Democrats won 54.37% of the 2024 statewide vote but hold 82.35% of seats (14 of 17).
There are other states both Republican, North Carolina, and Democrat, Maryland, that also rank near the top of the charts in gerrymandering but they do not have the same sort of sway as Texas, California, New York (which is a very solid map right now but looks to become even more partisan than the one they tried to use for last election that was struck down in the courts). If Section 2 goes away ironically enough Democrats would have to start to court a whole new set of voters that they have previously disregarded while also at the same time be careful of keeping what they have given how the Republicans made such stunning gains among minority groups last year.