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Canadian New Democratic Party (NDP) leader Tom Mulcair arrives on stage to speak at a rally in Montreal on October 18, 2015. Canadians go to the polls on October 19 with the option of choosing to 'stay the course' with the Conservatives or plump for change touted by the Liberals and New Democrats, in legislative elections too close to call. AFP PHOTO/NICHOLAS KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)

Canadian New Democratic Party (NDP) leader Tom Mulcair arrives on stage to speak at a rally in Montreal on October 18, 2015. Canadians go to the polls on October 19 with the option of choosing to 'stay the course' with the Conservatives or plump for change touted by the Liberals and New Democrats, in legislative elections too close to call.    AFP PHOTO/NICHOLAS KAMM        (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)

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Canadian New Democratic Party (NDP) leader Tom Mulcair acknowledges applause at a rally in Montreal on October 18, 2015. Canadians go to the polls on October 19 with the option of choosing to 'stay the course' with the Conservatives or plump for change touted by the Liberals and New Democrats, in legislative elections too close to call. AFP PHOTO/NICHOLAS KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)

Canadian New Democratic Party (NDP) leader Tom Mulcair acknowledges applause at a rally in Montreal on October 18, 2015. Canadians go to the polls on October 19 with the option of choosing to 'stay the course' with the Conservatives or plump for change touted by the Liberals and New Democrats, in legislative elections too close to call.    AFP PHOTO/NICHOLAS KAMM        (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)

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Posters for Canadian Liberal Party leader Justin Trudeau (L) and New Democratic Party leader Tom Mulcair are seen on a street in Montreal on October 17, 2015. Canadians go to the polls on October 19 with the option of choosing to 'stay the course' with the Conservatives or plump for change touted by the Liberals and New Democrats, in legislative elections too close to call. AFP PHOTO/NICHOLAS KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)

Posters for Canadian Liberal Party leader Justin Trudeau (L) and New Democratic Party leader Tom Mulcair are seen on a street in Montreal on October 17, 2015. Canadians go to the polls on October 19 with the option of choosing to 'stay the course' with the Conservatives or plump for change touted by the Liberals and New Democrats, in legislative elections too close to call.    AFP PHOTO/NICHOLAS KAMM        (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)

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Justin Trudeau, leader of the Liberal Party of Canada, center, looks on as Thomas 'Tom' Mulcair, leader of the New Democratic Party, shakes hands with Conservative Leader Stephen Harper, Canada's prime minister, prior to the second leaders' debate in Calgary, Alberta, Canada, on Thursday, Sept. 17, 2015. The debate pits Harper and his Conservative Party's program of tax cuts and spending restraint against the Liberal Party's Justin Trudeau who is pledging to raise taxes on the highest earners and Thomas Mulcair of the New Democratic Party who advocates increasing levies on corporations. Photographer: Ben Nelms/Bloomberg via Getty Images

Justin Trudeau, leader of the Liberal Party of Canada, center, looks on as Thomas 'Tom' Mulcair, leader of the New Democratic Party, shakes hands with Conservative Leader Stephen Harper, Canada's prime minister, prior to the second leaders' debate in Calgary, Alberta, Canada, on Thursday, Sept. 17, 2015.   The debate pits Harper and his Conservative Party's program of tax cuts and spending restraint against the Liberal Party's Justin Trudeau who is pledging to raise taxes on the highest earners and Thomas Mulcair of the New Democratic Party who advocates increasing levies on corporations. Photographer: Ben Nelms/Bloomberg via Getty Images