The Caucus has more on the Edwards endorsement:
Mr. Edwards has carefully played down his aspirations for an administration role. In an interview in January, he said he would not accept a vice-presidential spot or Cabinet position. “No, absolutely not,” he said, shaking his head emphatically when asked.
But privately, he told aides that he would consider the role of vice president, and favored the position of attorney general, which would appeal to his experience of decades spent in courtrooms as a trial lawyer in North Carolina; and his desire to follow in the footsteps of Robert F. Kennedy, one of his heroes.
Aside from the sense of social justice Edwards would bring to the job, it's nice to think about having someone in the AG's office who can figure out that waterboarding is torture.