Louisiana lawmakers have approved a new map of congressional districts that is designed to help Republicans gain an additional seat in the U.S. House of Representatives. The passage of this map on Friday by the state legislature comes after a U.S. Supreme Court decision in April that struck down the state's existing map as an illegal racial gerrymander.

The controversial redistricting plan eliminates one of Louisiana's two majority-Black congressional districts, both of which are currently represented by Democrats. This move is seen as a significant shift in the state's political landscape and follows a national trend of redistricting battles fueled by the Republican party's efforts to maintain its slim majority in the House during the upcoming midterm elections.

Republicans currently hold four of Louisiana's six congressional seats. The newly approved map is projected to allow the party to secure a fifth seat. The map was passed by the Louisiana state Senate with a 28-to-10 vote. Governor Jeff Landry, a Republican, is expected to sign the map into law, despite anticipated legal challenges.

Democrats in the state legislature argued that the new map constitutes racial gerrymandering, aiming to concentrate Black voters, who largely register as Democrats, into a single district. State Senator Royce Duplessis, a Democrat, criticized the decision, noting that other Southern states like South Carolina have refrained from redrawing maps mid-election year. He characterized Louisiana's actions as a "vicious race to the bottom."

The sponsor of the bill, Republican State Senator Jay Morris, maintained that the new district lines were determined by party affiliation rather than race. He stated that the intention was to improve the performance of Republican-held districts by strategically placing more Democratic voters in a specific district.

The U.S. Supreme Court's ruling in Louisiana v Callais, which invalidated the previous map, was viewed by many as a weakening of the 1965 Voting Rights Act, legislation designed to protect minority voters from discrimination.

This redistricting effort in Louisiana is part of a broader political strategy in several Southern states to redraw congressional maps in favor of Republican candidates. The intensity of these redistricting battles underscores the high stakes of the upcoming midterm elections for both parties.

Legal experts anticipate further litigation challenging the new map, potentially leading to another court battle over the fairness and legality of Louisiana's congressional representation.