TALLAHASSEE, Fla. — The Florida Legislature approved a new congressional map intended to maximize Republicans’ advantage in the state as part of the national redistricting battle that President Donald Trump launched before this year’s midterms. The vote came just two days after Gov. Ron DeSantis unveiled his proposal and the same day that the U.S. Supreme Court rolled back a key provision of the Voting Rights Act. The decision could make it harder for Democrats to challenge Republican efforts to redraw congressional districts in ways that limit the influence of nonwhite voters. DeSantis’ map could increase Republicans’ advantage in Florida’s House delegation to 24 to 4, up from the current split of 20 to 8. The potential four-seat gain is the same as what Virginia Democrats expect from a recent redistricting referendum, which is being challenged in state court there.…