U.S. President Donald Trump’s trade war and annexation threats have upended Canada’s election and dramatically improved the fortunes of the Liberal Party, which could win a fourth consecutive term in power next week.

Canada’s Pierre Poilievre seemed to be cruising toward victory in the next election. His Conservative Party was polling around 20 percentage points ahead of Justin Trudeau’s Liberals because of growing voter frustration around political scandals and rising housing costs.