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Redistricting in America

How district lines shape political power — and who draws them.

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2022 · 118th Congress Partisan lean data shown for 2022. Boundary lines change at redistricting years.
2014
2010 Census
2024
2020 Census
118th Congress  ·  2022 Election Results
R+40
D+40
Loading district boundaries…
Racial Makeup
Gerrymandering Context
Efficiency Gap by State — Most Gerrymandered Maps
State Districts 2022 Seats (D / R) Statewide Vote Share Map Favors
Texas3813 D / 25 RD ~43% · R ~57%Republican
Florida288 D / 20 RD ~44% · R ~56%Republican
North Carolina147 D / 7 RD ~46% · R ~54%Republican (contested)
Georgia145 D / 9 RD ~46% · R ~54%Republican
Ohio155 D / 10 RD ~44% · R ~56%Republican
Wisconsin83 D / 5 RD ~48% · R ~52%Republican
Illinois1714 D / 3 RD ~55% · R ~45%Democratic
Maryland87 D / 1 RD ~55% · R ~45%Democratic
Massachusetts99 D / 0 RD ~64% · R ~36%Democratic
Pennsylvania179 D / 8 RD ~50% · R ~50%Competitive / Fair
Michigan137 D / 6 RD ~49% · R ~51%Competitive / Fair
Arizona94 D / 5 RD ~49% · R ~51%Competitive / Fair
Virginia117 D / 4 RD ~52% · R ~48%Competitive / Fair

District boundaries: U.S. Census Bureau TIGER/Line Cartographic Boundary Files, 118th Congress (2022). Election results: MIT Election Data and Science Lab. Efficiency gap methodology adapted from Stephanopoulos & McGhee (2015). Racial demographics: U.S. Census Bureau ACS 5-Year Estimates.