The Clintons will NEVER do this. Should HRC decide to run against BHO it would blow up the Democrat Party and the Clintons would reviled for it.
Don't know, they like to be "saviors" and there is still a long time for 0bama to make things worse. The party would want to avoid seeing a landslide loss that would destroy the Left for the next 20 years.
In fact, the only way I see the Rats coming close to being able to win again is to call Obama incompetent and putting someone else up.
It didn’t work out too bad for Ted Kennedy when he challenged Carter