<Li> September 9, 2016: Strength in Democracy, a party which had three incumbent MPs among its 17 candidates in the last election is deregistered by Elections Canada for failure to file papers maintaining its party status . </Li> <Ul> <Li> March 18, 2017: Martine Ouellet is acclaimed as leader of the Bloc Québécois . </Li> <Li> May 27, 2017: Andrew Scheer is elected Leader of the Conservative Party of Canada . </Li> <Li> October 1, 2017: Jagmeet Singh is elected Leader of the New Democratic Party . </Li> </Ul> <Li> March 18, 2017: Martine Ouellet is acclaimed as leader of the Bloc Québécois . </Li> <Li> May 27, 2017: Andrew Scheer is elected Leader of the Conservative Party of Canada . </Li>

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