Which he should: The job would give him extra experience and give America four or eight years to get used to a black vice president. He'd emerge as the prohibitive favorite for the nomination in 2012 if Hillary loses this year and in 2016 if she wins.
But Obama will need the organized, vocal support of national black leaders if he's to bargain effectively for the veep spot. Right now, New Mexico Gov. Bill Richardson is probably the frontrunner for the slot. A Clinton administration alum, he's closer to Hillary than is Obama - and attractive to his fellow Latinos.
But if Hillary defeats Obama and African-American leaders demand that he join the ticket to assuage the hard feelings, Sen. Clinton may have no choice but to oblige. The question is: Will the traditional black leadership go to bat for Barack - or is he turning them off by turning away?