Here's a new ARG poll from 12/26-28:

Dean 37
Kerry 19
Clark 12
Undecided 18

Here's their poll from 12/15-17
Dean 41
Kerry 17
Clark 13
Undecided 12

The undecideds are clearly up and Dean seems to be down a bit. This has to be good news for Kerry and Clark. If Kerry can manage a strong third in Iowa, he might just make a run at Dean in NH. If Dean wins Iowa, however, he'll get a good bounce going into NH.