Gov. Romney's support is strong, but Gov. Huckabee's support may be slipping.

A week ago, an ARG poll placed Mike Huckabee over Mitt Romney by an 11-point margin among likely Republican caucus-goers, but the latest poll by the group puts the two back in a statistical tie, 23 to 21 percent.

...the poll indicates that Huckabee’s support among male voters in Iowa may be slipping. Last week, Huckabee had 31 percent support among Republican men; this week, he and Rudy Giuliani are tied at 20 percent. John McCain and Mitt Romney both have the support of 17 percent of the GOP’s likely male caucus goers.