Of course all just speculation. But I don't think Gore in 2001-2009 would have been as left as 0bama was. But whatever, we got what we got.
Bush was better than Gore would have been. Hey we got Alito and (cough) Roberts. One reels at what Gore would have dumped on us. Between Reagan and Trump, W was the best president. Though that is really not saying much.
In 2008, McCain probably still would have run and won. No thanks, things worked out a lot better than I thought it would. Yet, McCain’s reign of terror continues.