Here’s an interesting article about the dynamics of the Democratic campaign:
The Clinton organization had a clear plan A: It envisioned the candidate, as the choice of the party establishment and natural heir to the presidency, to so dominate 2007 that she would be able to corner, not have to capture, the nomination. It worked perfectly for most of the year.
The strategy has imploded. In a similar situation, Bill Clinton would have changed plans on a dime — he could have gone from B to E during a rest stop.