A number of candidates have been campaigning intensely in Iowa in one of the most competitive presidential races in decades. But the polls show no frontrunner on either side.
"It would be like a six-month trial and a hung jury," David Axelrod, a campaign adviser to Democratic candidate Barack Obama, the senator from Illinois, told The New York Times. "I think it is really possible."
On the Republican side, former Arkansas Gov. Mike Huckabee and former Massachusetts Gov. Milt Romney appear to be tied. Although former Sen. Fred Thompson of Tennessee has suggested he might drop out if he fails to get into the top three in Iowa, most other candidates are expected to soldier on at least into February.
On the Democratic side, former Sen. John Edwards of North Carolina could be the only real gainer in Iowa. If he runs even or out-performs Obama and Sen. Hillary Clinton of New York, he can argue the party now has a three-way race.