Several states have enacted revised congressional district maps ahead of the 2026 midterms through mid-decade redistricting, an infrequent practice outside the post-census cycle. As of mid-2026, Alabama, California, Florida, Louisiana, Missouri, North Carolina, Ohio, Tennessee, Texas, and Utah have adopted new maps, driven by a mix of state legislative action, special sessions, voter referendums, and court rulings tied to Voting Rights Act challenges. Partisan efforts in both Republican- and Democratic-led states, including sequential responses between Texas and California, have accelerated changes aimed at shifting seat allocations. Litigation outcomes in Alabama and Louisiana have also finalized lines, while remaining legal disputes or procedural hurdles could still affect implementation in a few states before November voting. These developments reflect state-level control over redistricting processes and varying thresholds for map approval.