WASHINGTON — In a landmark decision on Tuesday, the Supreme Court invalidated Louisiana’s congressional map, significantly limiting the consideration of race when drawing district lines. This ruling holds substantial consequences for future House elections.

Previously, lower courts had mandated that Louisiana establish a second majority-black district for the 2024 elections to align with Section 2 of the 1965 Voting Rights Act. This section aims to prevent the dilution of minority voting power.

Challenging this decision, the Trump administration, along with state officials, argued that the revised map constituted racial gerrymandering, contravening the 14th Amendment’s guarantee of equal protection for all citizens.

During oral arguments last October, Hashim Mooppan, the principal deputy solicitor general, contended, “If these were white Democrats, there’s no reason to think they would have a second district, none. The argument here is that because these Democrats happen to be black, they are entitled to a second district. If they were all white, we all agree they wouldn’t receive the same consideration.”

In Louisiana, where approximately one-third of the population is African-American, the state’s congressional representation includes two Democratic lawmakers elected from majority-black districts, contrasted with four Republican representatives.

Roughly one-third of Louisiana residents are African-American, and the state’s only two Democratic lawmakers in Congress (compared to four House Republicans) were elected from the majority-black districts.

The justices initially took up the Louisiana map case during the 2024-25 term, but in a rare move, ordered both sides to restate their arguments to consider both the 14th and 15th Amendments, the latter of which stipulates that states cannot deny citizens equal protection under the law nor abridge their rights on the basis of race.

That was widely interpreted as a signal that the Supreme Court was gearing up to weaken Section 2 of the Voting Rights Act.

During oral arguments in the consolidated Louisiana v. Callais and Robinson v. Callais cases, the Court’s six conservative justices seemed inclined to do just that.

According to one analysis from Democratic voting groups Fair Fight Action and the Black Voters Matter Fund, Republican officials could redraw 19 congressional districts in the South and Midwest to be significantly more favorable to the GOP as a direct result of Tuesday’s ruling.

However, it’s not clear if red states will be able to seize on the Supreme Court’s decision in time to significantly impact the 2026 midterms, in which Democrats are favored to retake the House of Representatives.