The Constitution should have been followed in 2000, the USSC should have refused to hear the Bush v. Gore case.
Had the Constitution been followed, there was no way for Gore to become President (although there was a scenario whereby Lieberman could have become VP).
Gore would have won in 2000 if he had taken New Hampshire. Those 4 EC votes were what denied him the oval office. He only needed Florida because of his 1 loss in New England.