Pennsylvania Supreme Court Strikes Down 2011 Congressional Map as Unconstitutional Partisan Gerrymander -- Map Gave GOP 13-5 Advantage in a 50-50 State

The Pennsylvania Supreme Court struck down the state's 2011 congressional map in a 5-2 party-line ruling, finding it violated the state constitution's "free and equal elections" clause. The 2011 map had split 28 counties across multiple districts. Expert testimony showed that of 500 computer-simulated nonpartisan maps, none produced a 13-5 GOP advantage. In 2012, Pennsylvanians reelected a Democratic senator by 9 points and Obama by 5, yet sent 13 Republicans and 5 Democrats to the House. The court imposed a new map for 2018 that split only 13 counties -- Democrats gained 4 House seats in the 2018 midterms.