I think people are underestimating how much the media adores Duckworth. Normally the St. Louis media market(which covers much of Southern Illinois in sort of an afterthought), only pays tangential attention to Illinois politics, but they were all over Duckworth in 2012, despite the fact that her seat is nowhere near the viewing area for our local affiliates. The Post-Dispatch and the local broadcasters are going to work themselves into a frenzy over Duckworth.
Duckworth has always been one of the most compelling candidates in every cycle where she's been a challenger. 2006 against Roskam, 2012 against Walsh both got her national press (Especially since she was running against Walsh, who couldn't go 5 words into a sentence without making a disparaging comment).
I expect her to get less press attention this time however, at least nationally. Instead of running against a severely unpopular Republican Party, or a deadbeat dad with anger issues, she'll be running against a moderate Republican who everyone generally likes.