Why do you think this? Talking to Canadians (and Americans) who self-describe as left of centre, from centre-left to progressive and even a few beyond, this is not the case. People were afraid of what Poilievre would do. Americans definitely understand that Trump is doing really screwed up things. I don't think it is partisan. Off the top of my head, we saw leftists protest against Trudeau, Biden and Obama on gas pipelines, people locked in cages and drones.