Really don't like the use of the word "leak" here. Biden telling Dowd this information doesn't strike me as the cynical, John Edwards-esque thing it's being made out to be. We don't know whether this was Biden talking with Dowd for a story of hers, and him giving her the info off hand. Given his typical behavior, him giving info to people isn't particularly shocking. Have you ever seen a Biden interview where he doesn't reveal some random family tidbit or quote?