Until a few months ago, Pierre Poilievre was seen as a shoo-in to become Canada's next prime minister and shepherd his Conservative Party back into power for the first time in a decade. Then President Donald Trump declared economic war on the U.S.'s neighbor to the north and even threatened to make Canada the 51st state. Poilievre, a career politician and firebrand populist, has campaigned with Trump-like braggadocio, even taking a page from the “America First” president by adopting the slogan “Canada First.”