It'll all look completely different by November. Hostility between rivals will have been forgotten. Truest thing said in this campaign is when Obama said that about having been friends with Clinton before the campaign, and going to be friends after it. Meaning political friends, I take it, which is the relevant meaning.

I took that as an indication that if Obama comes in as winner he's quite likely to ask Clinton to be his VP. In which case I suspect she'll turn it down, because being a New York senator is probably more powerful than being VP, and she'd be a bit long in the tooth to be a plausible successor in eight years.

Whereas if she comes in first and offers it to him I suspect he'd take it, because he'll only be 55 in eight years.

And the answer for people who'd see it as cynical would be "This is a dangerous job in a dangerous world - if I die or get killed you want to have someone take over who'll be ready for the job".