Here's a funny Wash. Post story. Mike Huckabee chafes at being the front-runner in Iowa. It's much easier to play the "exceeded expectations" card when you're behind. This article also explains how Huckabee came to say he opposes waterboarding and continued use of Guantanamo, a place he once made out to be a veritable country club.
After the Iowa poll showed that Republican voters like him but found him much less "presidential" and "electable" than Romney, Huckabee sought to build his foreign policy credentials, meeting with a group of retired generals who are in Des Moines to urge the 2008 candidates to commit to opposing torture. After the meeting, Huckabee joined Sen. John McCain (R-Ariz.) in declaring his opposition to the interrogation procedure known as "waterboarding," and said he would support closing the U.S. military prison at Guantanamo Bay, Cuba, a contrast with the other leading Republicans.
Hotair.com (how's that for a perfect name?) fully illustrates here the Huckabee flip-flops on this issue with relevant quotes.