A bit of blackmail?

The US media and Obama's team are playing up his victory, however Hillary Clinton is avowed to fight on and has warned Obama against declaring premature victory. She claims that any claim of victory would be a "slap in the face" to her millions of supporters so far as well as those in states who have yet to vote. Is this a gambit to undercut Edwards' as potential running mate should the rest of the superdelegates declare, or is it designed to mobilise her supporters to reduce Obama's slim lead and get some superdelegates to rethink their support? Obama is going to find it a difficult race to the White House, so the choice is controversial and superdelegates will probably be considering how his colour and name will play out in a dirty contest against McCain, Clinton probably know that if there is no clear leader then she is still in with a chance.