In the past, the Giuliani camp has viewed Mike Huckabee as an ally. The theory: If Huckabee beats Romney in Iowa, then it will be harder for Romney to pull off the kind of early-primary sweep that would make the later big states where Rudy is stronger irrelevant.
But, what if Huckabee catches fire? Here's a CNN poll now that shows Huckabee trailing Giuliani only by 24-22 nationally, a statistical tie. And here's a Survey USA poll that shows Huckabee leading the GOP field in South Carolina as well as Iowa. And here's another national poll, this one by the NY Times, that shows Rudy leading Huck 22-21 -- another statistical tie.
At what point does Huckabee mutate from an interesting spoiler to a winner?