And also keep in mind re it being more of a "Jack" thing than a Mulcair thing per se that under Mulcair's leadership in '15, the NDP went from 60+ seats in QC to 16 seats--a tally which might have been halved again had the election been a week longer, as it captured a moment in free fall (thus a lot of those who survived the '15 debacle were practically accidental survivors among the walking wounded).
True, Mulcair was a symbol of the party taking QC seriously at long last; but there was always an element of the fragile, unreal, and "conditional" about the Orange Crush. Though the consolation is that *something* stuck around, i.e. the party's now genuinely viable in inner-urban Montreal in the same way that it's traditionally been in Toronto, a concept which would have been laughable a generation or two ago. (Of course, I'm treating '25 as an all-around exception to "viability"--but the ghost thereof remained evident)