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.

Martha Hall Findlay, a former Suncor Energy executive and Liberal member of parliament who heads the University of Calgary's School of Public Policy, said she is gratified to see the main federal parties recognizing the importance of economic growth in addition to the environment.