Lessee....
(con) Bush--------> (lib) Clinton------> (con) Bush-----> ?
(con) Thatcher---> (lib) Blair-----> (heading for defeat to cons)
(con) Mulroney---> (lib) Cretian/Martin----> (heading for defeat to cons)
Due to the shorter election cycle in the US, and Kerry's likely win, it is my scientific opinion that Canada and Britain will have a 1 term conservative leader before lib/labour come back.
You heard it here first!