A collection of sampled districting plans and summary statistics for all 50 U.S. states, generated by the 50-State Simulation Project. It was created by the ALARM Project to enable evaluation of enacted congressional districts against simulated alternatives that account for each state's specific redistricting rules and political geography.
Use Cases
- Compare the partisan bias of an enacted congressional plan against an ensemble of simulated districting plans for the same state.
- Analyze summary statistics of simulated plans to understand the range of possible electoral outcomes under a state's redistricting criteria.
- Evaluate a state's current redistricting plan by benchmarking it against simulated plans tailored to that state's political geography.
Strengths
- Covers all 50 U.S. states, providing a national scope for analysis.
- Plans are generated by simulations tailored to each state's specific redistricting rules.
- Created by the authoritative Algorithm-Assisted Redistricting Methodology (ALARM) Project.
Limitations
- The dataset contains simulated, not actual, districting plans, which may not capture all real-world constraints.
- Specific sample sizes (rows) and data formats for the plans and statistics are unknown.
- Simulation methodology and underlying assumptions may influence the ensemble of generated plans.
Provenance
- Source
- Algorithm-Assisted Redistricting Methodology (ALARM) Project
- Collection Method
- Generated via cutting-edge redistricting simulations that account for state-specific rules and political geography.
- Time Range
- Based on post-Census redistricting cycles, but specific decade not stated.
- Freshness
- Last updated on 2026-02-19.
- Geography
- All 50 U.S. states.