The Chicago Tribune/WGNTV poll finds that 52-percent of Illinoisans surveyed backed Kerry, compared with 38-percent who favor Bush going into the November election.
The results are identical to a Tribune/WGN poll taken in February, before Kerry had even won his party's nomination.
Only five-percent of those polled said they're still undecided, while four- percent planned to vote for another candidate.
The survey also found that 42-percent of Illinois voters call themselves Democrats, compared to 29-percent who identify themselves as being Republican.
The survey of 700 likely voters in Illinois had an error margin of four percentage points.
Viewers with disabilities can get assistance accessing this station's FCC Public Inspection File by contacting the station with the information listed below. Questions or concerns relating to the accessibility of the FCC's online public file system should be directed to the FCC at 888-225-5322, 888-835-5322 (TTY), or email@example.com.