Via First Read, Obama took a swipe at John Edwards today:

The reason now that I raise this issue of the special interests is because everybody now in the campaign talks about how I am going to fight for you. Like Sen. Edwards, who is a good guy -- he's been talking a lot about, 'I am going to fight the lobbyists and the special interests in Washington.' Well the question you have to ask is: Were you fighting for'em when you were in the Senate. What did you do? Because I did something, immediately upon arriving in the Senate, despite the fact that it wasn't a popular position to take ... And that will give you some sense of whether or not folks are real are fighting for when they get into the presidency.

The Edwards camp responded thus:

"I guess the Obama campaign is starting to realize what others have already: There is growing excitement on the ground for John Edwards as we enter the homestretch," said Edwards communications director Chris Kofinis in a statement. "But the truth is that John Edwards is the only candidate in this race who has never taken a dime of PAC or lobbyist money and he's also the only one urging the Democratic Party to reject lobbyist money. Unlike others, John Edwards has beaten corporate special interests his entire life, and won't be obliged to compromise or negotiate with them as President."

Obama's comment does give credence to Reid Wilson's assessment that Edwards is certainly still in the Iowa game.