“Define-Combine Procedure” Reduces Partisan Bias in U.S. District Maps

US map represented by partisan districts
January 30, 2024

Kevin DeLuca, CSAP faculty affiliate and assistant professor of political science, collaborated with Maxwell Palmer of Boston University and Benjamin Schneer of Harvard Kennedy School to devise a new method for drawing districts that, in their words, “reduces partisan gerrymandering without requiring a neutral third party (such as an independent commission, judge, or tiebreaker) or bipartisan agreement.”

In a paper published in the journal Political Analysis in December, the researchers reveal the Define-Combine Procedure (DCP), in which one political party chooses contiguous, equal-population districts and the opposing party combines pairs of these selected districts to create the final districts. For example, if a state required 10 districts, the state’s Democratic representatives might define 20 districts, and then the Republicans would choose which neighboring pairs to combine and form a 10-district map.

Read the full story by Rick Harrison at the external link below.

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