What Illinois governors have gone to jail?

The following Illinois governors have gone to jail:

* Otto Kerner Jr. (1961-1968): Kerner was convicted of bribery, conspiracy, and mail fraud in 1973 and sentenced to three years in prison. He served 17 months before being released on parole.

* Dan Walker (1973-1977): Walker was convicted of bank fraud, racketeering, and conspiracy in 1987 and sentenced to seven years in prison. He served five years before being released on parole.

* Rod Blagojevich (2003-2009): Blagojevich was convicted of corruption charges, including soliciting and accepting bribes, in 2011 and sentenced to 14 years in prison. He is currently serving his sentence.