The most important document of this new approach to politics may be this week's now famous TV commercial in which a man on camera accuses Mitt Romney of killing his wife. (The man's late wife, not Ann.) The spot features a Missouri steelworker called Joe Soptic, who recounts how Bain Capital bought his plant and eventually closed it, costing him his job and health benefits. "A short time after that," he says, Ilyona Soptic was diagnosed with cancer. "I don't know how long she ...