Almost a year ago, the Crystal Ball took a first crack at listing the vice presidential possibilities in both parties (LINK). The list has held up surprisingly well. But the justifications for various candidacies have changed, and now that we know John McCain will make the choice, it’s time for reconsideration. (We’ll await the unofficial crowning of the Democratic nominee to play this game on the Democratic side, unless Democrats keep the game tied through the spring. Our discipline can only last so long.)
Let’s start by revising and extending our earlier remarks, and asking the most important question. Ideally, what does a presidential candidate need in a VP ticket-mate? Here are the most important elements, and a second-banana nominee ought to meet most of these criteria: