The collapse of Canada’s minor parties accounts for some of this local-level volatility. The left-wing New Democratic Party fell from 18% of the vote to 6%. The right-wing People’s Party dropped from 5% to 1%.

MISSISSAUGA, Ontario — Donald Trump cast a long shadow over Canada’s national election — and many Canadian voters noticed. In his first 100 days back in the White House, the U.S. president has lobbed barbs at America’s northern neighbor, levied tariffs on Canadian goods and talked about making Canada the 51st state .