Conservatives once had a 25-point lead ahead of Canada's next election. That lead has since vanished. Experts say Trump's actions may changed the course of the election.

Whatever the case, one thing was clear: Mr. Trump is not giving up on his obsession with Canada, and the new government that emerges from Monday’s vote will need to deal with a leader intent on both hurting Canada’s economy with tariffs, and coveting its vast resources.