right now - and it's early. things will change. - it seems clear enough that biden will sweep the south, while warren and sanders split the north and west. warren still doesn't have a path, but splitting the delegates is enough to keep bernie out of it, because once you get to the convention, they won't support him.
so, you may even end up in a scenario where sanders has more delegates than warren going into the convention. but, they'll pick warren, anyways.
and, warren will lose to trump.