Harold Meyerson, editor of the liberal magazine The American Prospect, tells a story of a friend of his who had a dream. He was walking through the headquarters of the Kerry campaign. Behind a door marked "Campaign Manager" he found Kerry manager Mary Beth Cahill. As he drew nearer, however, the woman suddenly ripped off her Cahill mask, behind which was . . . Susan Estrich, Michael Dukakis's campaign manager! Mr. Meyerson's friend woke up screaming. Lots of Democrats are having similar nightmares about 1988, when Mr. Dukakis, once ahead 17 points in the polls, lost by eight to George...