http://www.usaelectionpolls.com/…

Candidate Combined Normalized Average Straw Poll Average Percent Gain Net Gain
Mitt Romney 66% 31.5% NEGATIVE -34.5
Mike Huckabee 8.2% 18.0% 220% +9.8
Sam Brownback 7.4% 15.3% 207% +7.9
Tom Tancredo 7.4% 13.7% 185% +6.3
Tommy Thompson 5.1% 7.2% 141% +2.1
Ron Paul 2.6% 9.1% 350% +6.5
Duncan Hunter 3.9% 1.2% NEGATIVE -2.7

I’ve not double checked the math but given the general position in national polls before Ames and the amount of time and money spent in Iowa it was expected that Paul would be a major percentage winner.