Officials might lie, but the numbers don't. Researchers found that the Federal Judicial District for Northern Illinois, which includes Chicago and several nearby counties, saw 45 public corruption convictions in 2013 and as many as 1,642 convictions since the US Department of Justice started tallying the statistics in 1976. The put this in perspective, Chicago had more corruption convictions in 2013 than LA (19) and Manhattan (13) combined.
Despite being home to the "corruption capital" and all those former governors sentenced to prison time, Illinois placed third in the report's ranking of states with the most corruption, coming in behind familiar suspects like New York State and California. So it's not all bad?