Here is my nightmare scenario. I don't think this will happen, I believe Pres. Bush will win, but, think about this:
Kerry/Edwards win. Kerry is out (after legal wrangling) due to the 14th amendment. Edwards is president by default. How is Edwards Vice-President chosen? If I recall correctly (I was a bit young when this happened) when Nixon stepped down and VP Ford became president didn't Ford select his VP? What if Edwards chose Hillary.
How scared would Edwards be of getting capped with Hillary as his VP?
I don't think the system necessarily works that way For Edwards to succeed Kerry JF'nK would have to be outed after he'd been president, at least momentarily. But under your scenario he technically couldn't have that moment!
Now if Kerry were to concede the point before the electoral votes were cast perhaps his electors could change their vote to Edwards (and the Edwards VP electors change their vote to whomever) and then Edwards would be President. However some states require electors to vote per the election results. I'm sure the Rats would try to ignore those laws; I don't know whether they'd succeed. If enough don't the election is thrown into the House where Bush would win. This sub-scenario is moot as Kerry's ego is a large as Gore's. There's no way he'd concede the point before the electoral vote filing deadlines.
If instead the hypothetically disqualified Kerry was thrown out at the electoral vote counting stage we'd only have Bush votes left to count. I don't know whether c. 260-0 electoral votes would count as a win or whether Bush would still need the standard 270 votes to win at that stage. If the latter then the election would be thrown to the House to vote amongst the the top 5 (remaining in this scenario) electoral vote winners. Unless at least one Kerry elector has defected to Edwards before the voting deadline Edwards wouldn't be an eligible candidate there. Bush would win by default. If Edwards got at least one electoral vote, so there'd be a contest in the House, Bush would win it barring huge changes in the House tomorrow. That vote goes as 1 vote for each state and Bush has a solid lead that way. So you'd end up with Pres. Bush and VP Edwards.
After the last 12 years, the Secret Service knows the difference between the two parties. There would be no chance for an unnatural VP promotion. If on the other hand that VP were to receive the medical care he's earned Bush might be able to reappoint Cheney.
If the House counted Kerry's electoral votes and declared him winner and JF'nK were disqualified after that then perhaps Edwards could become president by succeeding Bush! Veep is inaugurated before POTUS. If Bush's term expired a few minutes later and there was no one to replace him then VP Edwards would take over.
Another scenario would be for a 2/3 vote of both Houses to remove the traitor's disability and let a disqualified Kerry become President. I wouldn't put it past the senate to so vote. After all they voted 100-0 to throw a sham impeachment trial. But I'd hope the house could muster 146 votes to block that option.