In NC 2020, 49.9% voted for Trump, 48.6% voted for Biden. This new map draws the majority of people who voted for Biden into 4 districts, changing the congressional district ratio from 7:7 to 10:4. This new map became law last week.

https://centerforpolitics.org/crystalball/articles/north-carolina-redistricting-republicans-bring-out-their-golden-goose-again/
https://www.npr.org/2023/10/25/1208002456/north-carolina-redistricting-congressional-districts