David Gill, the Democratic candidate in the 13th Congressional District, holds a 43 percent to 37 percent lead in a poll taken late last week, according to the Democratic Congressional Campaign Committee.
The automated poll, taken by the DCCC, was of 458 likely voters in the district. It was taken on Oct. 11 and 13. It has a margin of error of plus or minus 4.6 percent.
The poll also found that President Obama leads Mitt Romney in the 13th District, 48 percent to 43 percent. The 13th District runs from Champaign-Urbana southwest to some of the Illinois suburbs of St. Louis, and also includes Decatur, Springfield and parts of Bloomington-Nomal.
The poll's findings are at odds, however, with another recent poll, taken Oct. 10, by the firm We Ask America.
That poll found that Republican Rodney Davis had a 44 percent to 42 percent lead over Gill, with independent candidate John Hartman drawing about 5.5 percent, and about 9 percent undecided.
In the presidential race in the 13th District, Romney led Obama, 48.5 percent to 45 percent, according to the We Ask America survey.
The DCCC poll shows that both Davis and Gill have relatively high unfavorable ratings. Davis is viewed favorably by 25 percent and unfavorably by 30 percent. Gill is viewed favorably by 35 percent and unfavorably by 32 percent. Both candidates have been exposed to a barrage of negative TV commercials in the last six weeks.
"After spending his whole life on the inside track of corrupt Illinois politics, Rodney Davis carries some major baggage and it shows," said Haley Morris, a spokeswoman for the DCCC.