Recent surveys, however, have shown Huckabee picking up steam, and he is well within striking distance in the CBS News/New York Times poll, where he trails Romney, 27 percent to 21 percent, with a 5 percent margin of error. Rudy Giuliani was in third at 15 percent. All other candidates were in single digits, including Fred Thompson, who had 9 percent support among likely caucus-goers. While Romney still leads in Iowa, his support base is far softer than that of Huckabee, a former Arkansas governor whose campaign has gained momentum in recent weeks. Half of Huckabee supporters said they had...