WASHINGTON - It's no fun being the runner-up on inauguration day. To add to the poignancy for Sen. John Kerry, Thursday's inauguration was a year and a day since his surprise victory in the Iowa caucus propelled him to the Democratic nomination and, almost, the presidency. Kerry's seat assignment was in the seventh row as President Bush took the oath of office. And every time they flashed his picture on the Jumbotron, the crowd — full of wealthy Republicans — jeered. But he sounded a note of defiance as he looked ahead to the next four years. "Democracy means ......