By John Chuckman
America is engaged in another of its sprawling and costly national election campaigns. A few of the events, such as the New Hampshire primary or the Iowa Caucus, I’m sure have participants seeing themselves as Thomas Jefferson’s sturdy yeomen doing their civic duty. But such humble and misty-eyed tableaux can be deceiving for the big picture is quite disturbing, including, as it does, billions of dollars spent and a lot of noise generated about things which will not change in any outcome.