Efficiency gaps in the Midwest, 2012

State Seat share, Republican
Projected seat share, Republican
Efficiency gap
Illinois 39.8% 42.1% -2.3%
Indiana 69.0% 60.3% 8.7%
Ohio 60.6% 48.5% 12.1%
Wisconsin 60.6% 45.1% 15.6%

Data: Illinois Board of Elections, openelections.net

Credit: Better Government Association