Bill may expire by 2008, and if he does then there will be a considerable sympathy vote in her favor.
Psst. Don't give her any good ideas.
Who would off who.... hard to tell given their histories.
Ahem, let's try the XII Amendment, to wit:
But no person constitutionally ineligible to the office of President shall be eligible to that of Vice-President of the United States.
Game Over.