A quantitative measure of the effect of gerrymandering is the efficiency gap, computed from the difference in the wasted votes for two different political parties summed over all the districts. Citing in part an efficiency gap of 11.69% to 13%, a U.S. District Court in 2016 ruled against the 2011 drawing of Wisconsin legislative districts. In the 2012 election for the state legislature, that gap in wasted votes meant that one party had 48.6% of the two-party votes but won 61% of the 99 districts.