The election in Montreal had been seen as a referendum on Canada’s deeply unpopular prime minister, who has faced calls from within his party to quit.

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 party of Canadian Prime Minister Justin Trudeau recently lost the byelection in Montreal, a safe seat. Seen together with the defeat in Toronto, another Liberal Party fortress, in June, and his plunging approval ratings,