Democratic campaigns give closing arguments

All three Democratic candidates are releasing final ads in Iowa on this eve of the vote.  Let's start with John Edwards.  The former North Carolina Senator decided to take the Nader theme of populism and corporate greed, and pledged to fight for the middle class.

Hillary Clinton was next.  In her final argument, the Clinton campaign probably thought that a facial close-up would make her audience pay greater attention to what she was saying, and judge her based on content, not her rhetorical dryness.

Lastly, Obama's will be released tonight.