Popular veteran Iowa Senator Grassley: Huckabee "Catching On a Bit"

There is a darkhorse candidate in the GOP field. "I think the guy who could surprise everybody is Huckabee," Grassley said, referring to former Arkansas Gov. Mike Huckabee, whose support has been rising. "He seems to be catching on a little bit. His presentations are good. He fits in well with social conservatives."

Huckabee is the guy who matches up best with Iowa Republicans, Grassley said. "It's demeanor, background, personal beliefs, friendliness, stuff like that. How he conducts himself, things of that nature. I'm talking about who fits in with the average Iowan, who are they going to feel comfortable with."