In the new Insider Advantage Iowa poll.

UPDATE: The chart I was looking at was wrong. Huck is up three. Statistical tie.

UPDATE II: Or not. An e-mail:

Notice on the page you link to… there are two questions
Huckabee is up 2 points for “likely voters”
Romney is up 3 points for “highly likely voters”
Most polls take the second number as their guide.

So UPDATE III: Who knows what happens in Iowa.