What would Shakespeare's Jack Cade say after the New Hampshire Democratic primary? Maybe the demagogue in "Henry VI" would call for the pollsters to be killed first, not the lawyers. The opinion researchers find themselves in a difficult place after most predicted a big Obama sweep. It's not their fault. The dirty secret is it is hard to accurately poll a primary. The unpredictability of who will turn out and what the mix of voters will be makes polling a primary election like reading chicken entrails -- ugly, smelly and not very enlightening. Our media culture endows polls -- especially...