A nationwide redistricting battle is unfolding, largely encouraged by President Donald Trump, as Republican-led legislatures across several states face growing pressure from the former president and his allies to create additional GOP-leaning congressional districts and solidify the party’s House majority.

In North Carolina, Republican lawmakers advanced a new congressional map, joining a series of states—including Texas and Missouri—undertaking aggressive redistricting efforts ahead of next year’s midterm elections. The proposed map would target the district currently represented by Democratic Rep. Don Davis and give Republicans a likely advantage in 11 of the state’s 14 House seats, up from the current 10.

Once North Carolina’s new map would bring the number of newly drawn, Republican-favored districts nationwide this year to seven.

Meanwhile, in California, likely 2028 Democratic presidential contender and current Gov. Gavin Newsom is seeking to redistrict his state in a bid to counter the GOP-led effort throughout the country. A ballot issue set for a vote in November will determine whether the state assembly will be able to temporarily sideline California’s independent redistricting commission so that they can add five Democrat-leaning districts.