1) A comfortable victory, although probably less so then in 1992 or 1996. He gets a majority of the vote for the first time, however. Republicans, likely, would hang the "he lied" over his head and there might be some negative fallout for trying for another term. Nader still runs.
I would imagine something like this, give or take a few states. So, he ends up with 349 Electoral Votes. And considering that the GOP lost seats in 2000, I think that there is a realistic possibility that the House goes Democratic.
2) His third term probably would not be much different then Bush's, except for no Bush Tax Cuts and no Invasion of Iraq. His approval would sag a bit during the recession, but 9/11 would launch his approval rating into the stratosphere.
3) Who knows? Clinton may want to try again if it looks like he can win. The man still, obviously, wants to be president. If not him, then Gore, probably. Gore would lose. Clinton would, likely, face Clinton-fatigue and a closer election. Probably a tossup should Clinton decide to run again.
