If convicted of corruption, Illinois Governor Rod Blagojevich would make the fourth Illinois Governor to go to prison in the past 45 years.
Otto Kerner, a Democrat who was governor from 1961 to 1968, went to prison for arranging favorable horse racing dates in return for getting horse racing association stock at reduced prices.
Dan Walker, a Democrat who was governor from 1973 to 1977, served time for bank fraud, misapplication of funds and perjury. The charges were not related to his service as governor.
[ George Ryan, a Republican who was governor from 1999 to 2003, was convicted of corruption in 2006 for steering state contracts and leases to political insiders while he was Illinois' secretary of state and then governor. He's serving a 6 1/2-year prison term.