Submitted: May 7, 2008 - A senior campaign official and Clinton confidante has told me that there will be a Democratic nominee by June 15. He could not bring himself to say the words "Hillary will drop out by June 15," but that is clearly what he meant. I kept saying, "So, Hillary will drop out by June 15," and he kept saying, "We will have a nominee by June 15." He stressed what a reasonable person Hillary is.…