Well, despite what I noted earlier about the mistaken impressions about "statistical ties" the latest MSNBC poll shows Edwards 24%, Clinton 23%, and Obama 22%. This result is *so close* that even though if this was your only source you'd want to bet on Edwards, it now appears that Iowa Democrats are pretty much tied, especially given the fact that averaging of the polls - probably a more effective measure than any single poll - now will give Edwards a boost from this top showing.
President Picker still thinks Clinton will win due to the football game advantage and Bill Clinton master strategics that we think are not properly reflected in the polls, though I have not researched the polling questions. In fact if the polls *do* reflect some apathy all bets could be off in a very close race where you may see higher-than-anticipated participation and guys skipping the game to go support their candidate.
In fact one wonders if Richardson and Biden may be negotiating behind the scenes right now for a VP slot. They will each have caucus people who will need to "switch candidates" due to the 15% caucus support threshold. Thus if they asked their supporters at the last minute to move to any of the top three it could be enough to swing the result, and the stakes in Iowa are high enough for Obama, Clinton, and Edwards that any of them might agree.