I watch debates, interviews, etc... and here's how I sum up the candidates for anyone not paying attention. Here's how I think they would sum themselves up in a quote.

Republicans:

Guliani: "I was the mayor of NYC during 9/11. Really, I was the mayor of NYC."
Romney: "I, like a greek god, saved the Olympics."
Paul: "Welfare state.. did I say 'welfare state' enough?"
Thompson: "You're not Reagan enough."
Huckabee: "I did good in Arkansas."
McCain: "I backed the surge when nobody else did, and will keep giving this creepy grin after everything I say. *grin*"

Democrats:

Edwards: "Working class!! Oi Oi Oi!"
Obama: "Even though during every election people say there needs to be change, I will bring change. Like everyone else did, but different. Sort of a change in the way change is usually changing things. I.. will.. bring.. change"
Clinton: "I have experience, and my speech writers will tell you what it is."
Gravel: "Hello? Anyone there?"
Kucinich: "I'm here Gravel!"