Using Me.dium to chat with viewers of today's MTV/MySpace dialogue with John Edwards; why do we vote on Tuesday? The "Why Tuesday" video explains; the return of Chris Dodd's Talk Clock; Rudy Giuliani beams into supporters' homes using the "world wide web"; the finalists for Mitt Romney's ad contest have been announced, but no Slate videos are represented; and Chris Dodd sends a new kind of email.