The campaign of emergency room physician David Gill (D) released a poll Monday showing him in a dead heat with his opponent, Republican Rodney Davis, a former top aide to Rep. John Shimkus (R-Ill.).

Gill leads Davis, 40 percent to 39 percent, in a statistical dead heat. An independent candidate, John Hartman, receives 8 percent of the vote.

The 13th district in southern Illinois is competitive — especially so since Rep. Timothy Johnson (Ill.) suddenly announced his retirement after the GOP primary. In May, local Republican officials selected Davis to be their nominee instead.

Roll Call rates this race as Leans Republican.

Gill’s campaign pollster, Victoria Research and Consulting, took the opinion of 400 likely voters Sept. 26-27. The margin of error is 4.9 points.