Late last month, the Pennsylvania Supreme Court issued a ruling that congressional redistricting maps drawn after the 2010 census and in use for the last 3 election cycles (2012, 2014, and 2016) violated the Pennsylvania Constitution.Source: Pennsylvania Redistricting - Impeach PA Supreme Court Justices for Violating the PA Constitution?...

According to PlanScore’s basic model, the remedial plan adopted today by the Pennsylvania Supreme Court is impressively symmetric—both in absolute terms and compared to its predecessor. Its likely efficiency gap is -2% (versus its predecessor’s -10%), its likely partisan bias is -4% (versus -12%), and its likely mean-median difference is -3% (versus -4%). In my view, this is the single most important fact...