New Strategic Vision poll in Iowa (Dec 26-27, 600 Dem LV, 600 GOP LV, MoE +/-4.5%). On the Democratic race, it's about as tight a three-way race as possible, with very little movement over the last 10 days:

Democrats
Obama 30 (nc vs last poll Dec 16-18)
Clinton 29 (+2)
Edwards 28 (+1)
Biden 5 (nc)
Richardson 2 (-1)
Dodd 1 (nc)
Kucinich 1 (nc)
Undecided 4 (-2)

Overall, Clinton leads by 2.2% in the RCP Average for Iowa.

On the Republican side, the race is also extremely tight, with Huckabee appearing to tick down over the last ten days while Romney appears to have ticked up, and McCain looking to be making up late ground.

Republicans
Huckabee 29 (-2 vs. last poll Dec 16-18)
Romney 27 (+2)
Thompson 15 (-1)
McCain 14 (+6)
Giuliani 4 (-2)
Paul 4 (-1)
Undecided 6 (nc)

Overall, Huckabee still leads by 3.0% in the latest RCP Average for Iowa.