BREAKING: Dean wants closure by July 1 A potential game-changer from CBS News and "The Early Show." Democratic National Committee Chairman Howard Dean says he wants superdelegates to make a decision by JULY 1 -- the most specific he has been in his effort to prod the party to decide between Barack Obama and Hillary Clinton before the Democratic National Convention in late August. Harry Smith asked if after the nominating contests end with the South Dakota and Montana primaries on June 3, "Do you want the superdelegates to have some sort of vote immediately so that you'll know months...