Record Details


Field	Value

Title	Replication Data for: Gerrymandering and Compactness: Implementation Flexibility and Abuse

Identifier	https://doi.org/10.7910/DVN/B8JYZW

Creator	Barnes, Richard Solomon, Justin

Publisher	Harvard Dataverse

Description	Political districts may be drawn to favor one group or political party over another, or gerrymandered. A number of measurements have been suggested as ways to detect and prevent such behavior. These measures give concrete axes along which districts and districting plans can be compared. However, measurement values are affected by both noise and the compounding effects of seemingly innocuous implementation decisions. Such issues will arise for any measure. As a case study demonstrating the effect, we show that commonly-used measures of geometric compactness for district boundaries are affected by several factors irrelevant to fairness or compliance with civil rights law. We further show that an adversary could manipulate measurements to affect the assessment of a given plan. This instability complicates using these measurements as legislative or judicial standards to counteract unfair redistricting practices. This paper accompanies the release of packages in C++, Python, and R that correctly, efficiently, and reproducibly calculate a variety of compactness scores.

Subject	Social Sciences gerrymandering geospatial

Contributor	Ocean, Code

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