Harper and Trudeau have minimal impact on the Canadian economy, let along the global economy.

Canada's economy is growing fast right now because, for the past 70 or so years, the world has worked on roughly 9 to 10 year economic cycles and that puts us pretty much exactly where we were in 2007, or 1998, or 1988.

Just as Mulroney had little responsibility for the strong growth in 1988, Chretien had little responsibility for the strong growth in 1998, Harper had little responsibility for the strong growth in 2007 and Trudeau has little responsibility for the strong growth in 2017.

Same story for the global economic slowdown that started in 1990, 2000, 2008 and the next slowdown which is likely to start in 2018 or 2019.