Prime Minister Justin Trudeau, fresh from a bruising loss in a Toronto special election, now faces a fight that may deliver the knockout blow — a vote in the heart of his Montreal hometown.

The Canadian leader has pushed back against calls for his resignation from opponents and even some members of his Liberal Party. But it’s harder to dismiss voters. They voiced their displeasure with the government in June by rejecting a Liberal candidate in a party stronghold in Toronto, and now have the same opportunity in a district known as LaSalle-Emard-Verdun.