While I'm skeptical about a lot of the VP tea-leaf reading surrounding the recently announced DNC schedule, it does strike me that the selection of Mark Warner as the keynote speaker is suggestive. While Hillary Clinton does speak the same night, it still seems to me that, in an election year so wracked with gender conflict, it would be somewhat insensitive to have the nominee, VP, and keynote speaker all be dudes. Which in turn suggests that Obama may have already picked a woman as his VP. And if he's picked a woman she's almost certainly Kathleen Sebelius.