There's a lot of ways to rank the VP hopefuls. But as someone who has jumped headlong into surfing for the most insightful journalism about this election I can say with certainty that in terms of messaging discipline Mark Kelly is head and shoulders above everyone else. And that's no small accomplishment. Preventing oneself from distracting from the head of the ticket is a top job priority for a VP nom. There's wild speculation about everyone else but very little on him. #politics