I'm with Tristero and Bob Herbert. If it is proven that Cheney was drunk when he shot Harry Whittington, he should resign; but if he does, it's very much possible that the vice president to follow would be worse than ol' Dick.
He floats the idea of Vice-President Rice. While I'm sure that would be the logical choice for a Democratic president, a Republican has to deal with the "southern strategy". A black woman as Vice President would make a lot of people angry that Republicans really don't want angry.
(Nothing that they'll admit to, but regardless...)
Edit: Apologies to Tristero for giving credit to digby for the story.