"Should at least one US Representative and one Senator challenge the electors' votes, a Constitutional crisis could ensue."
Political suicide for anyone who did.
Not for Maxine Waters. Perhaps Jeffords could do it in the Senate.
Okay, not having my copy of the Constitution handy, what happens if the result is challenged in the House and Senate? Is the challenge voted on or does any challenge mean the House and Senate then choose the President and Vice-President?
Not really a crisis. The Constitution has rules for this possibility, the Senate and the House retire to their respective chambers, there is a two hour debate, and then there is a vote. If, and it's a mighty big if, the challange is upheld, the house votes for President, the Senate for VP. In other words they need a Republican house and Senate to vote for Kerry and Edwards.