No longer is Hillary the woman to beat. The latest Zogby poll suggests that Obama is now the favorite. According to the poll, all of the top five Republican contenders defeat Hillary while Obama polls over all Republican leaders. Edwards, likewise, polls over Republicans, but not as strongly as Obama.
Of course, as I've said before, the race isn't a national popularity contest; it's a state-by-state competition. And only state-level polls are really relevant. But it is interesting to see how things can shift substantially as the only polls that matter draw near.