Four years ago, just one presidential candidate showed up at the convention of liberal bloggers called by Daily Kos.com. At this week's convention, which is sold out with 1500 registered guests and 250 credentialed reporters, there will be seven, including Hillary Clinton, who's been defending Daily Kos against attacks from the right wing. Democratic National Committee Chair Howard Dean told the opening session, "What you have done… is to set this country on the path of restoring the democracy that George Bush and the Republicans have tried to undermine." Peter Leyden, director of the New Politics Institute, is attending the convention.