That's according to Public Policy Polling, which has released more results from their recent statewide survey.
The salient bits...on whether Illinois has the most corrupt politicians in the country:
57% of Illinois voters express that sentiment to 24% who disagree and 19% who are unsure. Republicans are the most solid in that belief, holding it by an 82/9 margin. But a majority of independents (53/27) and a plurality of Democrats (43/32) do as well.
Including this bit on Blago:
Perhaps the greatest indicator that Illinois is unusually corrupt is that fewer than half of voters in the state think Rod Blagojevich is the most corrupt Governor of the last half century. 42% of voters say he is followed by 29% for George Ryan, a total of 6% for older Governors Otto Kerner and Daniel Walker, and 22% who aren’t sure.
As you might expect opinions about who’s been most corrupt see a division along party lines- Democrats say it’s Ryan while Republicans say it’s Blagojevich.
PP also inquired about Attorney General Lisa Madigan:
Do you have a favorable or unfavorable opinion of Lisa Madigan?
28% Not Sure