There may be a very long-shot pathway to the presidency for Vice President Biden in 2016, but running as a vulture candidate — whose candidacy would be premised on the bet that the partisan vendetta of personal destruction being waged against Hillary Clinton by Republicans succeeds — is not that pathway. (snip) Had Biden announced his candidacy many months ago and articulated a powerful progressive rationale for his candidacy, I might have supported him. He didn’t, and the sole premise driving talk of a Biden campaign today is a negative premise that is unlikely to happen, i.e. that the campaign...