One of the last decade’s most interesting redistricting developments was the adoption of explicit partisan fairness criteria by Michigan and Ohio (sites of two of the 2010s’ most egregious gerrymanders). In Michigan, the new independent commission is required to draw… Continue reading

The new Freedom to Vote Act has many interesting pieces, but I want to focus here on the rebuttable presumption of gerrymandering that’s at the core of the Act’s redistricting provisions. In a nutshell, this presumption kicks in if a… Continue reading

Yesterday, Colorado became the first state to publish a draft congressional map. PlanScore’s analysis of the map is below. It would be slightly skewed in a Republican direction, with an expected efficiency gap of 2.5%, an expected partisan bias of… Continue reading

Illinois released draft state legislative district plans on Friday evening. Here’s PlanScore’s analysis of the state house map (hat tip to Brian Amos for converting the map into a usable digital format). It’s predicted to have a pro-Democratic efficiency gap… Continue reading