Sometimes, “follow the money” is great advice if you’re trying to figure out how Washington works.
Often, though, it’s not that simple.
A case in point is the new ad from Democracy for America, the netroots group founded by Howard Dean, and the Progressive Change Campaign Committee. The spot, which is on the Internet and which the groups have promoted with e-mails to their supporters, implies that some Democratic senators have been paid not to do the right thing.