The Louisiana 1st Congressional District uses a jungle primary on November 3, 2026, requiring a candidate to secure over 50 percent of the vote for an outright win or triggering a December 12 runoff. Incumbent Steve Scalise, the longtime Republican representative in this solidly conservative seat, faces limited opposition including Democrat Lauren Jewett and intra-party challengers such as Randall Arrington. Recent Supreme Court action in Louisiana v. Callais prompted map adjustments and confirmation of the open primary format, but the district’s established Republican voting patterns and Scalise’s prior margins around two-thirds of the vote have shaped trader views. With candidate qualifying largely complete and no major late developments shifting the field, the consensus reflects expectations that Republican consolidation could clear the outright threshold, though vote splitting among multiple GOP contenders keeps the outcome contested.