[cnn-photo-caption image= http://i.cdn.turner.com/cnn/2008/images/06/09/art.clinton.speech.gi.jpg caption="Senator Hillary Clinton speaks to supporters Saturday at the National Building Museum in Washington, DC."]
Hillary Clinton may be out of the race, but that doesn't mean her supporters are automatically going to flock to Barack Obama. Not by a long shot.
As she officially endorsed Obama on Saturday - Clinton urged the crowd to back Obama. When she said it, many cheered. But some supporters booed, loudly.
A CNN poll out Friday shows 60% of Clinton supporters say they'll vote for Obama, but 17% say they'll vote for Mccain and 22% say they won't vote at all.
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