Protesters against a Missouri congressional redistricting plan gather outside the Missouri Capitol on May 12 in Jefferson City, Mo. (AP Photo/David A. Lieb)

President Donald Trump’s push to redraw the nation’s U.S. House districts received mixed results Tuesday as South Carolina senators defied his desires but Missouri’s top court upheld a new map that could help Republicans win an additional seat in the November midterm elections.

Rather than waning, a national redistricting battle that began 10 months ago has intensified — inflamed by a recent U.S. Supreme Court ruling that weakened the federal Voting Rights Act and provided grounds for states to try to eliminate voting districts with large minority populations.

Republican lawmakers in Louisiana are wrestling with how politically aggressive to be when redrawing House districts after the U.S. Supreme Court invalidated a majority-Black district as an illegal racial gerrymander.

The ripples of the Louisiana ruling already have led to new U.S. House districts in Tennessee and have extended to Alabama, where Republican Gov. Kay Ivey announced an Aug. 11 special primary for four of the state’s seven congressional districts. That came after the U.S. Supreme Court on Monday overturned an order mandating use of a map with two largely Black districts. The state plans to switch to a map passed in 2023 that has only one majority-Black district, giving Republicans a chance to win an additional seat.

Republicans think they could gain as many as 14 seats from new House maps enacted so far in Texas, Missouri, North Carolina, Ohio, Florida and Tennessee. Democrats, meanwhile, think they could gain six seats from new maps in California and Utah. The Virginia Supreme Court last week struck down a redistricting effort that could have yielded four more winnable seats for Democrats.

Trump urged South Carolina to redraw its congressional districts ahead of the November elections in an attempt to help Republicans win another seat. The state House voted in favor of letting lawmakers return after the regular session ends to consider redistricting, and proposed a new map that could eliminate the state’s only Democratic-held seat.

But the Senate had to give permission to take up redistricting, too. The 29-17 vote failed, coming just two votes short of the two-thirds needed, as five Republicans joined all Democrats in opposition. The Senate could try again before its regular work session ends Thursday