Just as polls were opening in Canada, Donald Trump said on social media that Canadians should “vote for the man” who would make their country part of the U.S.

Canadians will vote for a candidate from one of the political parties in their federal “riding,” or district. Whichever candidate gets the most votes in a riding will become a Member of Parliament (MP) in the House of Commons, and the party with the most MPs wins the election.

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.