DWS would grimace and speak of the party while sort of signalling that she would.
With Clinton I imagine the follow up question of, “Would you campaign for him, like he did for you?”.
Lol, “Well, what would he be offering in exchange?” is what she’d be thinking, and the great unsaid would be that she generates negative votes. Even her fund raising efforts would be a net negative.
So many members of the establishment will be like fish out of water when they’re asked. The blatant opportunists will be easy to identify, as they’ll hail him as the candidate they’ve been waiting for.
“I’m Spartacus, but he is the Kwisatz Haderach!”