The Conservative Party was once considered the heavy favorite in Canada’s election. But President Trump’s trade war has upended the campaign, with the Liberal Party surging.

Polls open in Canada election defined by Trump, reports AFP. How will the election work? Voters nationwide will elect all 343 member of the House of Commons, one for each constituency. There are no primaries or runoffs — just a single round of voting.

Canada’s new prime minister, a political novice, is on the cusp of leading his party to a comeback, fueled in part by President Donald Trump’s attacks.