Republicans are rushing to redraw congressional districts to their advantage after a U.S. Supreme Court decision weakened minority protections under the Voting Rights Act.

When Texas Republicans redrew the state’s congressional map last summer to give their party additional pickup opportunities, it set off a back-and-forth with both parties…

The rush to redraw congressional maps in the South ahead of the midterms has caused logistical headaches and may lead to errors, officials said.