Wolf Blitzer and the Unity Ticket

What's with CNN's Wolf Blitzer and having an Obama-Clinton or Clinton-Obama ticket? Remember he was the first one to propose this at a debate--the Los Angeles debate. Since then he keeps pushing the issue, all the while claiming this is what most Democrats want. he asked John Edwards, on today's Late Edition, if Clinton should be the VP. It's one thing to ask a well-intentioned question, it's another thing to keep repeating the same question at every available opportunity so that it becomes conventional wisdom. It seems to me that Blitzer is himself advocating the unity ticket. By the way, expect Obama to face some serious pressure to have Clinton on the ticket when he achieves the nomination.