If I were capable of feeling empathy for Hillary Clinton, I would be full of concern for her mental and physical state as she prepares for a 90-minute ordeal Monday night at Hofstra University. We are seeing very little of her lately, as unspecified debate prep supposedly takes up her time. One rather disturbing clue as to her mental state came Wednesday when she made a weird teleconference speech to a labor gathering in Las Vegas. Headlines resulted from her question, “Why aren’t I ahead 50 points?” but the shouting tone of voice in which she delivered that fantasy-laden query...