tarheel91 on 16 January 2008
Clinton is the only major candidate because the Democratic party didn't like Michigan moving its primary up and refused to accept their delegates as a result. Obama and Edwards removed their name from the ballot in order to 1) agree with the party and 2) ensure that Michigan's votes wouldn't be counted (they could claim it wasn't fair if the Democratic party reverses their policy and tries to accept them later).
Edit: My bad, Icka already said some of it.
