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
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2010 Census
Cross-decade validation · same algorithm · different geography
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2000 Census
Historical baseline · 2000 tract boundaries · 30-year span
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2020 — VRA Multi-Constraint
Minority district optimization · metis-vra · ⚖️ VRA analysis tab
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Research & Code
GitHub Repository
Source code, pipeline scripts, 20 research papers
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Research Papers
Tracks A–E: algorithm, validation, VRA, extensions
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