George Bush won the election in 2000 very likely because of the 5 -4 Supreme Court decision in his favor. One vote of one judge.
If one of those judges in the majority had left the Court a few years before, and been replaced by a Clinton nominee, it's entirely possible, all else being equal, that Gore would have won that election, after a 5-4 SCOTUS ruling in his favor.
Which decision would have been right? Which would have been wrong? Who's to say?
I imagine all of those who died on Sept. 11, all of those killed in the Iraq war as well as their loved ones, and those who lost limbs and suffer TBI's would decide the decision was poor, and would like Gore to have been POTUS. He might have listened when GWB did not and he might not have attacked and occupied Iraq.
Dude, Gore supported the invasion. Stop rewriting history.