It really is important to have some perspective, it's anyone's game in Iowa as the chart below shows. Santorum was barely even a blip on November 3, 2011.
Note, that Jindal and Huckabee are currently at 6% in Iowa in the latest PPP poll and both have high favorability (both are at 60% favorable with ~20% unfavorable, about where Cruz and Rubio are at) Imagine the utter mayhem that would result if one of them wins? It can happen. Note that Jindal and Huckabee have been coming to Iowa A LOT: