Is Hillary hearing donkey hoofbeats? On his Weekly Standard podcast today, Bill Kristol put the odds at "better than 50/50" that one or more of Elizabeth Warren, Joe Biden or John Kerry would jump into the race against a Hillary Clinton whom he described as "extraordinarily weak."

Kristol made an undeniable point, to wit, that "if someone came in and gave you [her] poll numbers, you would look at that and say, whoah, this is a very weak and very vulnerable frontrunner."