2nd L- 2nd R: Bloc Quebecois Leader Gilles Duceppe, Conservative Leader Stephen Harper, NDP Leader Tom Mulcair, Green party Leader Elizabeth May and Liberal Leader Justin Trudeau are flanked by debate moderators (seated) as they take part in the French-language debate in Montreal September 24, 2015. Canadians go to the polls in a federal election on October 19, 2015. REUTERS/Adrian Wyld/Pool