Donald Trump's annexation threats and tariffs loom large as Canadians head to the polls to pick their prime minister.

Canada elects a new government on Monday to confront annexation threats from the United States and deal directly with President Donald Trump, whose trade war has defined the campaign.

Donald Trump might as well be on the ballot when Canadians vote for a new government. The US president’s trade war and threats to make Canada the 51st state have infuriated Canadians and led to a surge in nationalism that has helped the Liberal Party flip the narrative heading into Monday’s parliamentary election,