Ten states—Alabama, California, Florida, Louisiana, Missouri, North Carolina, Ohio, Tennessee, Texas, and Utah—have enacted new congressional maps since mid-2025 through legislative action or court orders, representing the most active mid-decade redistricting cycle in decades. Partisan majorities in state legislatures drove most changes, often in response to earlier maps drawn by opponents or shifts in Voting Rights Act enforcement following the Supreme Court’s Louisiana v. Callais decision. Litigation remains a key variable in several states, with special primaries already scheduled in affected districts and final map challenges possible before November 2026. Traders assess outcomes based on completed enactments and unresolved court cases that could still alter which maps reach Election Day.