The latest Washington Post/ABC News poll from Iowa contradicts the poll last night that showed John Edwards regaining his lead in Iowa. It may also show the tremendous difficulty in trying to poll in advance of a caucus since it is hard to determine who is likely to participate.
This poll shows Sen. Barack Obama leading the Democratic field with 33%, followed by Sen. Hillary Clinton at 29%, Edwards at 20% and Gov. Bill Richardson at 8%.
Key finding: "Each of the leading contenders appears to enjoy distinct advantages. More of Obama's backers said they are certain to participate than did those who have gotten behind Clinton. But Clinton's supporters are the most committed and enthusiastic, and Edwards counts among his supporters experienced caucus attendees who are more likely to turn out again."