Canada's ruling Liberal Party lost a once-safe seat in a Montreal parliamentary constituency, preliminary results showed on Tuesday, a result likely to put more pressure on Prime Minister Justin Trudeau to quit.

The loss, coupled with a recent Toronto defeat, signals waning support for Trudeau, who faces a challenging re-election campaign.

Justin Trudeau’s Liberal party. On September 16th the prime minister’s party lost a by-election in his hometown of Montreal, an area that it had represented almost uninterruptedly since the second world war.

Prime Minister Justin Trudeau remained defiant after his Liberal Party lost a key seat in Montreal, urging voters to take a harder look at the political options they’ll face in the next election.

Ottawa bureau chief Stuart Thomson talks to Quebec correspondent Antoine Trépanier about the humbling Liberal defeat in a Montreal byelection on Monday. Bloc Québécois candidate Louis-Philippe Sauvé won the byelection in LaSalle—Émard—Verdun by more than 200 votes over the Liberals’ Laura Palestini.