If Sen. Edwards comes from behind and becomes the Democratic Nominee for the Presidency, perhaps he would choose Howard Dean as his running mate.
I doubt Dean would go along with that. It would be way too humiliating for him, going from being the "anti-establishment" candidate and the Next Big Thing, to playing second fiddle to someone approved of by the party mainstream.
I also think that those Democrats who support the likes of Clark and Edwards would rather be stuck in a lift with Don Rumsfeld than have any affiliation with Howard Dean.
But since we're talking Northern liberals, how about Biden or Durbin? Or even John Kerry?