Nine states—Alabama, California, Florida, Louisiana, North Carolina, Ohio, Tennessee, Texas, and Utah—are using new congressional maps for the November 2026 midterms after a wave of mid-decade redistricting that began in 2025. Republican-led legislatures in states including Texas, Florida, and North Carolina enacted changes following presidential encouragement and a U.S. Supreme Court ruling in Louisiana v. Callais that narrowed Voting Rights Act challenges to race-based districting. Democratic-led California countered with voter-approved lines via Proposition 50. Ohio’s commission adopted revisions under state rules, while Utah’s followed a court order. Most maps face ongoing litigation over partisan or racial gerrymandering claims, yet courts including the Supreme Court have allowed their use this cycle. Missouri’s proposed map was blocked for 2026, leaving its prior lines in place pending a referendum. These shifts affect roughly one in ten voters and could alter several House seats.