REDIST

Algorithmic Congressional Redistricting — All 50 States, Three Decades

435 Districts
50 States
0.367 Mean PP (2020)
+56% vs Unweighted
+20% vs Enacted 2020

The fairest redistricting method is the oldest one: divide it in half. Split each state's census tracts into two equal populations using METIS graph partitioning. Edge weights equal shared boundary lengths, so minimizing the cut automatically minimizes district perimeter — compactness without ever optimizing for it. No political or racial data enters the algorithm at any stage.

Interactive Dashboards
2020 Census
Edge-weighted bisection · 50 states · 435 districts
2010 Census
Cross-decade validation · same algorithm · different geography
2000 Census
Historical baseline · 2000 tract boundaries · 30-year span
2020 — VRA Multi-Constraint
Minority district optimization · metis-vra · ⚖️ VRA analysis tab

Research & Code
GitHub Repository
Source code, pipeline scripts, 20 research papers
Research Papers
Tracks A–E: algorithm, validation, VRA, extensions