Hmmm

LII: Constitution: Amendment XXV

I'm about to go to bed, but here's something interesting...

Section 2. Whenever there is a vacancy in the office of the Vice President, the President shall nominate a Vice President who shall take office upon confirmation by a majority vote of both Houses of Congress.

In other words, if Dick Cheney keels over (if he hasn't already watching these returns) his replacement would have to be ratified not only by the Senate (which I still think winds up 50-50 with Cheney the tiebreaker) but the House. And a Democratic-controlled House is really unlikely to ratify any Republican who could be a credible Presidential candidate.

In other words, if Cheney dies, Pelosi moves to a heartbeat away, and she won't go anywhere. And yes, I remember that West Wing sequence.