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 is heading into federal elections, where Prime Minister Mark Carney is vying for a chance to continue leading the country, as tensions over trade grow with the US.

An unusual consensus around energy policy has emerged in the campaign ahead of Canada's April 28 election, with the two main candidates both promising to fast track energy projects to diversify oil exports away from the United States.