Pierre Poilievre would have had the next election in the bag.
All he had to do was make one, small calculated concession and he'd be sitting in majority territory right now; all he had to do was put down his Trudeau bashing for a moment, stand shoulder to shoulder with Trudeau and effectively say with JT, "Fuck you, Trump, Fuck you, America, bring it on!! You pushed us and now it's on."
He didn't.
PP largely ignored the Trump threats and rhetoric and chose to keep bashing the Liberals and Trudeau, and Canadians wondered who the hell's side he stood on.
It's just been getting worse for Poilievre since.
Political science classes will be speaking about this monumental political blunder from Pierre Poilievre for decades to come.