ABC News' Sunlen Miller Reports: In an interview in August's edition of The Progressive magazine, Elizabeth Edwards, wife of former Senator John Edwards, D-N.C., takes candid shots at the other candidates battling for the Democratic nomination against her husband. "The problem for me with the other candidates is I don't know what it is that drives them," she explained, "I should think the president has to be somebody who has that kind of vision outside themselves." Mrs. Edwards praised her husband for apologizing for his vote in favor of the Iraq War, and questioned Senator Hillary Clinton's, D-N.Y., for not...