How can one make a case for running a government effectively when the candidate can’t even manage his own schedule? John Edwards has people scratching their heads in Iowa and everywhere else — because that’s all they can do when his campaign events are supposed to start: Like Bill Clinton and Jesse Jackson before him, Mr. Edwards nearly always runs late while campaigning for the Democratic presidential nomination. He routinely begins events more than 45 minutes or even an hour past the scheduled starting time, keeping dozens or, lately, hundreds of people in jam-packed rooms awaiting his entrance.With the approach...