Jan Schakowsky (D): 24
Alexi Giannoulias (D): 22
Roland Burris (D-inc): 18
Undecided: 36
(MoE: ±4%)
Schakowsky represents IL-09, a northern Chicago district with a D+20 PVI. Her own polling memo (Progress Illinois has the full text) frames the race as being "wide open," which makes sense - Giannoulias, the state Treasurer, has a lot of money and is buddy-buddy with Barack Obama. Schakowsky will have to fight hard to wrest this nomination away from him. The memo says Giannoulias has higher name rec than Schakowsky, but doesn't specify numbers (I'd bet both are pretty low, though).
Progress Illinois also reports that Schakowsky is sending out a separate letter today saying that she'll announce her plans on June 8th. The bigger question mark is still probably Roland Burris - not that I think he has much of a shot at winning, but if he bails, his supporters have to go somewhere. Schakowsky thinks it might be to Chicago Urban League CEO Cheryle Jackson, but we'll have to wait and see. Illinois does have the earliest primary in the nation (February 2010), so serious candidates can't wait too much longer to make up their minds.