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Feingold Return No Sure Thing (Stuart Rothenerg, 5/03/10, Roll Call)

Let’s be clear: Russ Feingold isn’t damaged goods the way Senate Majority Leader Harry Reid (D-Nev.) is, and he isn’t running in a Republican-leaning state, the way Rep. Brad Ellsworth (D-Ind.) is. He’s an aggressive campaigner who has always tried to avoid the Washington insider label.

But Feingold’s numbers suggest a serious GOP challenger could make his life uncomfortable, and the fact that the three-term senator would go up with his first television ad in April is reason enough to take another look at the race.