Redistricting Tracker
How congressional district maps changed after the 2020 Census and their political impact. Track apportionment shifts, redistricting methods, partisan effects, and ongoing legal battles.
Apportionment: Gains & Losses
State Redistricting Details
Redistricting Methods
Court Challenges14 states
Challenged under Voting Rights Act for diluting minority voting power in new districts. Federal lawsuit filed by NAACP and MALDEF.
Governor DeSantis vetoed legislature's maps and imposed his own, eliminating a Black-access district. State Supreme Court allowed the maps to stand for 2022.
State Supreme Court initially struck down maps as partisan gerrymander, but after 2022 judicial elections flipped the court, the new majority reversed course and allowed legislature-drawn maps.
Court of Appeals struck down Democrat-drawn maps as unconstitutional gerrymander. Court-appointed special master drew replacement maps that created more competitive districts.
Ohio Supreme Court struck down maps 7 times as unconstitutional partisan gerrymanders, but the commission repeatedly submitted similar maps. Federal court ultimately allowed maps to be used.
Challenged as racial gerrymander for packing Latino voters. Case dismissed by federal court.
VRA challenge alleged commission failed to create sufficient minority-opportunity districts in Detroit area. Case settled.
Governor vetoed legislature maps. State Supreme Court adopted map from citizen submissions after impasse.
Republicans challenged maps as partisan gerrymander, but Oregon Supreme Court upheld them.
Federal lawsuit under VRA alleges maps dilute Black voting power by cracking Atlanta-area Black communities. District court ordered new map with additional Black-opportunity district.
Supreme Court ruled in Allen v. Milligan (2023) that Alabama must draw a second majority-Black district or something close to it. Legislature initially defied the ruling.
Federal court ordered a second majority-Black district following the Allen v. Milligan precedent. Legislature resisted but eventually complied.
Governor Evers vetoed legislature maps. Wisconsin Supreme Court (after liberal majority gained in 2023) adopted governor-proposed maps.
Voters approved independent commission via ballot initiative, but legislature ignored commission recommendations and drew own maps. State Supreme Court case pending.