Only three years ago, Canada's Liberal Party was seen as destined to play the same apparently invincible role in the 21st century as it played throughout the 20th, but it has now slid into so deep a malaise that current speculation centers on whether it will survive at all. No fewer than 11 candidates are contesting the leadership left vacant by the resignation of Prime Minister Paul Martin following his defeat in last January's election, but not one of them has a powerful national profile. Nor have any of them the long experience of office that characterized most previous Liberal...