Mr. De Sapio was the Tammany Hall "boss" defeated in 1963 by a young "reform Democrat" named Edward Koch. WFB attempts in this hour to explore how party leaders actually wield their power, but Mr. De Sapio is wary and can't be drawn. WFB: "Suppose I had been a district leader and said, 'Mr. De Sapio, I love you like a brother, but, in fact, I want Adlai Stevenson nominated [as opposed to JFK].' What happens to me? Do I get thrown in the East River?" CDS: "You are applauded for your candor." WFB: "You are not suggesting that you wouldn't put-pressure on me? Unless you were in a position to put pressure on me, Mr. Kennedy wouldn't be so concerned to get your support-isn't that the way it works?" CDS: "Not necessarily." WFB: "I'm not necessarily against pressure, I just want to know more about the mechanics-" CDS: "I don't think that's the proper word; I think that a better word would be an understanding."