Supreme Court ruling on minority districts boosts GOP redistricting push

The Supreme Court’s April 29, 2026 ruling in Louisiana v. Callais struck down Louisiana’s second majority-Black congressional district and narrowed Section 2 of the Voting Rights Act, setting off a fresh redistricting scramble across the South. In a 6-3 decision along ideological lines, the court opened a path that could let Republican-led legislatures redraw maps in ways that strengthen the party’s hold on the U.S. House of Representatives.

The ruling landed hard because majority-minority districts have long served as both a civil-rights remedy and a political force. The 1982 amendments to Section 2, together with Thornburg v. Gingles, created the legal basis for the creation of majority-Black congressional districts throughout the South. In Alabama, Section 2 litigation in 1992 produced the state’s first majority-Black district and, later, its first Black representative since 1877. That pattern reshaped the region’s political map, giving Black voters more direct representation while also changing which white incumbents survived the redraws.

The court had only recently reinforced that framework. In Allen v. Milligan in 2023, it recognized that Alabama’s 2021 congressional plan likely violated Section 2 by producing only one district in which Black voters constituted a majority. The state’s map, the court noted, largely resembled the 2011 version and again left Black voters with a single opportunity district. The new Louisiana decision moved in the opposite direction, cutting back the use of race-conscious redistricting and putting pressure on states with similar maps to revisit them.

That pressure is political as much as legal. Scholarly work on Southern House elections from 1988 to 2000 found that newly created majority-Black districts disproportionately crowded out white Democratic representatives and hastened white realignment toward the Republican Party. A comparative account of Republican ascendancy in Southern House elections says that the GOP’s rise in the 1990s increased party polarization and helped make a Republican House majority possible. Ben Ginsberg, then general counsel to the Republican National Committee, later said Republicans had examined the data and concluded that white Southern Democrats had long controlled the map-making process in ways that underrepresented both Republicans and minority voters.

Civil rights leaders warned that the court’s new line would leave minority voters with less protection. The NAACP called the ruling “a devastating blow to what remains of the Voting Rights Act.” Republicans in Louisiana, Alabama and other Southern states moved quickly to revisit district lines, a sign that the fight over majority-minority districts is now inseparable from the fight for congressional power.