North America now has an all left-wing trifecta of leaders

[Former President tack50]

Yes, it has happened before. Even if we go by the more strict definition of "a Democratic trifecta" for the US (as opposed to simply a Dem president), the last time it happened was for roughly 1 year between late 1993 and late 1994, with the following people in charge:

Canada: Jean Chretien, with a Liberal majority government
US: Bill Clinton, both houses of Congress under Democratic control
Mexico: Carlos Salinas de Gortari, both houses of Congress under PRI control

Other quick examples that come to mind would be Carter/Trudeau Sr./José López Portillo (1976-1979) or LBJ/Lester Pearson/PRI (1963-1968)

This of course assumes that we take all 3 of the Canadian Liberals, the US Democratic Party and the Mexican Instituional Revolutionary Party all as "left wing", which may be a stretch

For a comparison, the last time there was a right wing trifecta was for a period of less than a year in 2006, with George W. Bush and both houses of Congress under Republican control, Stephen Harper winning a minority government in Canada and Vicente Fox and Felipe Calderón with PAN pluralities in the Mexican Congress.

If you con't count that because Harper's government was a minority government; then there is no prior example thanks to PRI ruling Mexico with an iron fist for like 80 years.

[Former President tack50]

Enrique Peña Nieto, Justin Trudeau, and Barack Obama were literally all leaders a half-decade ago.

Saying this with the implication that any of these people are remotely left-wing is peak Blairism - specifically, the weird post-2007 becoming-a-cranky-Tory-in-retirement Blairism. When Tony Blair was in power, he was significantly to the left of all three of these. That is something both he and his current supporters, all five of them, seem to have forgotten.

They are all out of the respective political left wings of their own countries; ergo they are left wing. You can debate whether they're properly leftist or whatever but that would be pointless. Given a binary choice between these politicians being of the political left or the political right, they're all very obviously of the former.

Also, bringing up an irrelevant tongue-in-cheek username instead of actually responding directly to the substance of my claim is...lol.

If you want to be pedantic, in the 2012 Mexican election EPN was the centrist candidate, with AMLO (PRD) on the left and Vazquez Mota (PAN) on the right

Also, by 2015 Obama didn't have a trifecta anymore, so in my view he doesn't really count

[Former President tack50]

More seriously, under Blanchet's leadership, the Bloc Quebecois' primary emphasis has been on promoting anti-multiculturalism to a small town and outer-suburban base against a Liberal Party which primarily represents the largest, most diverse city in the region. If we dropped that into any other context, we'd recognize that as rightist or even far right politics. The fact that the Bloc is somewhat to the left of Trudeau on social housing or gun rights is secondary to that multiculturalism divide.

So TL;DR, the Bloc Quebecois is unironically #populist ?

Tbh I would say that the social housing and gun rights arguments (or others like you know, taxation, social aid and what not) would trump being against multiculturalism and what not.