For my money, the most interesting pundit around is Jon Swift. Here's a small portion of his take:
The biggest loser of all was Hillary Clinton. If she can't win in Iowa, where can she win? In every contested race since 1972 (Bill Clinton ran unopposed in 1996), the winner of the Iowa caucuses for the Democrats has gone on to be elected President, except for 1972, 1976, 1980, 1984, 1988, 1992, 2000 and 2004...
You can read the rest right here.