Trump's Canada tariff threats have pushed economic concerns to the forefront, shaking the Conservatives' once-dominant lead.

Canada's ruling Liberals, who a few weeks ago looked certain to lose an election this year, are mounting a major comeback amid the threat of U.S. tariffs and are tied with their rival Conservatives, according to three new polls.

Canada’s Liberal party appeared destined for electoral oblivion. Its leader, Prime Minister Justin Trudeau, had just quit amid plunging poll ratings, blamed by voters for a stagnating economy and taunted as a “woke liberal” by a newly elected US president.