Is this (to use a phrase America's headline writers have become suddenly fond of) Howard's end? A month ago, Dr Howard Dean was reckoned to have the Democratic presidential nomination locked up: he was set to win the Iowa caucuses tomorrow, the New Hampshire primary a week later, and he was cocky enough to have already moved on to courting the big Southern states. Instead, the former Vermont governor is stalled in a three-way tie in Iowa, and in New Hampshire the wacky general Wesley Clark is said to be rising fast while the Dean balloon slowly deflates.When precisely did...