I will stop short of saying Sen. Clinton is unpopular but she is a known quantity so she may get votes for that, but that is also a problem. In contrast Sen. Obama is much more likeable, positive, and charismatic but will that be enough for him. We'll have to see.
I learned this through a FOX News Alert. Here's an article from FOX News.
UPDATE: From a breaking news e-mail from ABCNews.com...
HILLARY CLINTON LEADS BARACK OBAMA 41-17 PERCENT IN INITIAL SUPPORT AMONG DEMOCRATIC-LEANING VOTERS, ABC NEWS/WASHINGTON POST POLL FINDS