If Bush were up for re-election, how badly would he lose?

If George W. Bush were able to be, and up for re-election, how badly would he lose to Barack Obama, Hillary Clinton, or even his 2000 rival, Al Gore? Against Obama, I predict he would get 44% of the vote, and 225 electoral votes, while Barack Obama may get 55% of the vote and 313 electoral votes. Hillary Clinton would probably get 53% of the vote, and get 298 electoral votes, and Bush 46% of the vote, with 240 electoral votes. I think Al Gore would be a huge landslide because of people wanting to correct their mistake from 2000, getting 58% of the vote, and 450 electoral votes, with Bush getting 39% of the vote, with 88 electoral votes. This all umes no major third party candidates.