Corruption in Illinois has been a problem from the earliest history of the state. Electoral fraud in Illinois pre-dates the territory's admission to the Union in 1818. Illinois had the third most federal criminal convictions for public corruption between 1976 and 2012, behind New York and California. A study published by the University of Illinois Chicago in 2022 ranked Illinois as the second most corrupt state in the nation, with 4 out of the last 11 governors serving time in prison.