Feingold rips Dems for "dancing with the devil"

All right, maybe not "rips," but definitely some scolding over on former Sen. Russ Feingold's Progressives United blog today. Responding to a Politico report on the growth of the Senate Dems SuperPAC, Feingold critiques Dems' putting politics above principle by embracing this opportunity for limitless fundraising:

Democrats should never use unlimited contributions to fund their campaigns, and their participation in and enthusiasm for this type of cynical politics will only foil them in the long run. Our leaders are defined by the company they keep, and this company is corrupt.

Feingold, of course, was defeated in 2010 in a reelection campaign in which—despite facing a well-funded opponent—the Senator refused to take any money from special interest groups and asked them not to run ads in his support.