A technician cleans the set in preparation for the leaders debate on September 23, 2015 in Montreal.Five party leaders have confirmed they will participate in two major televised election debates in October. The media partnership responsible for producing the debates says Liberal leader Justin Trudeau, Conservative leader Andrew Scheer, the NDP's Jagmeet Singh, Green Party leader Elizabeth May and the Bloc Quebecois' Yves-Francois Blanchet will all attend. THE CANADIAN PRESS/Paul Chiasson