Blogger Claude Johnson talks to uncommitted superdelegate:
Once we began chatting, I quickly felt that X was looking for a way to declare her support of Senator Obama without running afoul of Bill Clinton. She repeatedly expressed how loyal she was to Bill because he put Democrats on the map, and all he’s done over the years. She was very worried and concerned about loyalty.
She never did mention Hillary Clinton. Only Bill.
That's a fascinating observation, and I wonder if it's a trait shared by more uncommitted super delegates beyond this sample size of one. Regardless, it's clear that no matter how damaging Bill has been at times this primary season, he's a huge reason she has been so viable and has been able to survive far deeper into the primary process than any mere mortal candidate would've managed.