** FILE ** In this July 21, 1988 file photo, Democratic presidential candidate Michael Dukakis gives a thumbs up as he arrives for his acceptance speech at the Democratic National Convention in Atlanta. For all its spectacle and optimism, the Democratic convention is haunted. Ghosts of elections past are walking the Pepsi Center's corridors this week, greeting old friends, even holding a luncheon. Years ago they won the prize that Barack Obama will claim on Thursday. But their names and deeds are dusty artifacts to young Americans, and to many older voters, they conjure up campaign debacles that helped Republicans paint the Democratic Party as too liberal, wimpy and egg-headed. (AP Photo/Peter Southwick, File)