During presidential election years, conservative politicians have often attacked the media for their liberal bias. But during this year's campaign, liberals are fighting back with what they see as a powerful issue -- the alleged conservative slant of the Fox News Channel, a unit of the media conglomerate News Corp. The assault on Fox News started on July 8, with a report from media watchdog group Fairness and Accuracy in Reporting claiming that in the six months through Dec. 19, 2003, 57% of guests on Fox News's popular evening news show, "Special Report with Brit Hume" were conservatives. The next...