One of these polls is obviously an outlier.

Insider Advantage/Maj. Opinion Poll
Giuliani: 26%, Huckabee: 17%, McCain: 13%, Romney: 12%, Thompson: 9%

CNN Poll:
Giuliani: 38%, Romney: 21%, Huckabee: 9%, McCain: 11%, Thompson: 11%, Paul: 5%; Hunter 1%, Tancredo less than 1%.

Considering Huckabee’s recent surge, I’d go with the Insider Advantage poll.