She doesn't have to challenge Obama, Bill. That wouldn't be the right approach at all. She merely has to be there when the circumstances move in such a way that Obama can't...or won't...run for office again. Such things have happened before. Presidential incumbents do not always elect to run for a second term.

I also have the impression that the public mind is being prepared, via the mass media, for Hillary Clinton to heroically step up to the plate and (like all her predecessors) "save the nation"...ho! ho! How droll. As if...!

Note: I merely said I have that "impression". No, I do not have any specific evidence to offer you in support of it nor would I dream of spending my time looking up any either...because it wouldn't make any difference anyway if I did...no one would change their mind...and it doesn't matter what you or I or Ebbie or Ake think about it in the first place. What will happen will happen regardless of what we think. Our opinions don't mean squat to the future of the US presidency.

We all just like to talk, that's all...and that's why we type all this stuff here. ;-) Talking is a way of unburdening and expressing oneself, therefore is its own justification. That is why we all come here.