Prime Minister Mark Carney has urged Albertans to vote to remain in Canada ahead of Monday's separation referendum, warning that the stakes are high. Speaking at a pro-unity rally in Calgary on Thursday, Carney said the vote is taking place at the worst possible time and called for a decisive result against separation.

What is Alberta voting on?

The October 19 referendum was called by Premier Danielle Smith earlier this year after a grassroots group gathered around 300,000 petition signatures asking for a binding referendum on separation. More than 450,000 Albertans have already voted early or by mail on a question asking whether the province should remain part of Canada or start the process of holding a binding referendum to separate.

Smith, a Conservative whose political base includes independence supporters, has advocated for Alberta to remain in Canada but has said the referendum is a chance to hear directly from Albertans.

Why does Carney say the stakes are high?

Speaking to thousands of people at Calgary's BMO Centre, Carney said a vote against Canada would be a dangerous bluff leading to years of deep division and uncertainty. He told the crowd to vote like Canada depends on it, because it does, and said turnout will determine the outcome. He also warned that some outside Canada's borders are working to break the country so they can own it, according to the Calgary Herald.

Carney attended the Calgary rally as part of two back-to-back pro-unity events in Alberta, with another set for Friday in Edmonton, his hometown. Earlier Thursday he toured Calgary businesses and spoke to pro-unity volunteers in a get-out-the-vote push.

What do both sides argue?

Separation supporters say the oil-rich province has been overlooked by federal politicians in Ottawa despite its wealth, arguing that successive Liberal governments put environmental policies above helping Alberta develop its oil and gas sector. Opponents say a newly independent Alberta would carry billions of dollars in debt, and warn that uncertainty would drive jobs and investment out of the province. Polls indicate most Albertans appear supportive of remaining in Canada, though Carney said the result should not be assumed from polling alone.

FAQ

When is the Alberta referendum?

The referendum is scheduled for Monday, October 19. More than 450,000 Albertans have already cast early or mail ballots.

What would a vote against remaining in Canada do?

It would instruct the provincial government to begin the legal process toward a future binding referendum on separation, rather than immediately making Alberta independent.