SEN. Hillary Rodham Clinton has lost the air of inevitability that once surrounded her campaign for the Democratic nomination. It remains to be seen whether she's willing to lose her soul in her quest for the presidency. Only a month ago, her main rival, Sen. Barack Obama, was dismissed as a "lightweight" by the political establishment. Now he has a slight lead over Senator Clinton in Iowa and New Hampshire and is believed to have a good chance of winning South Carolina. Magic Johnson's recent endorsement aside, the advantage Senator Clinton once enjoyed over Senator Obama among African-Americans has disappeared....