TORONTO – The heads of Canada’s major networks are sure there’s going to be a federal election and have told Canada’s political parties that TV debates have to change. In a letter sent today to Canada's major political parties, representatives of five television networks asked for immediate talks with the parties to discuss debate format changes. The letter was signed by Tony Burman, editor in chief, CBC News; Robert Hurst, president, CTV News; Steve Wyatt, senior vice-president news and information, Global Television; Louis Lalande, general manager TV and current affairs, RDI; and Pierre-Paul Beaulieu, executive producer, information and public affairs,...