One Democratic presidential candidate talks about his prostate cancer in a campaign TV spot. Several recall openly that they smoked marijuana, and another says "sorry" in admitting that he hasn't. Their stump chatter touches on grief counseling or how a family deals with a married daughter coming out as gay. America has learned that the death of a beloved teenage son reshaped one candidate's perceptions and that the miraculous healing of a toddler son altered another's priorities. Confession, tears and emotion have become campaign strategies. The "Oprahization" of politics has escalated during the Democratic presidential primary season. The candidates "want...