Pat Caddell: Obama "has been the most negative personal campaigner in the oval office -- ever, ever"

On Sean Hannity's show Pat Caddell, a pollster for Jimmy Carter, had this to say:

Let me tell you what's really bad, Sean. The president is running the real risk, every time you keep lowering the standard, breaking tradition -- this is Chicago politics. We don't care, we are going to disrupt your convention. For all the times we have had conventions, we have honored the idea in politics, you have yours, we have ours; then we engage a campaign. They're taking down all of this, just like the president's campaign; he has been the most negative personal campaigner in the oval office -- ever, ever.  You know what?  Winning matters more and that's what he is risking.