I live amongst the "New York upscale liberals" where she won 70% of the vote in February and now would be lucky to beat McCain one on one.
Things have turned on her here in New York...fast...and among the white middle-class too. The older vote is going to McCain regardless, the youngins are voting Obama or staying home if Hillary is the nominee.
every Hillary supporter I know will vote for Obama except the very few who will never vote for a black man (I remember their staunch opposition to Carl McCall in 2002 and they let out a groan when Governor Paterson took office in 2002)
I believe the party will eventually unite behind the nominee, and Obama will work to get voters who didn't vote for him in the primary and if you truly feel the party has left you and you can't be a member of this party anymore, no one is standing in your way to the door. You can whine and moan about how thousands will join you, but I suspect you are going to find yourself standing outside the door with lonely company.
But I'm a big boy and, if it comes to that, can survive periods of loneliness.