A tight cluster of constituencies, where mail-in ballots could prove crucial to the outcome, may have to wait days for a winner to be declared.
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Elections Canada expects “the vast majority” of mail-in ballots to be counted by Wednesday, although in some remote ridings it could take up to four days.
A record number of people voted by mail in this election, some for fear of voting in person during the COVID-19 pandemic.
Local election officials will begin opening mail ballots on Tuesday morning.
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Before being counted, the ballots will be checked by local election officials. They verify that voters have not sent out multiple ballots or have not already voted in person at a polling station, as well as the signature.
In Victoria, British Columbia, more than 12,600 people voted by mail, the highest in Canada, followed by Saanich-Gulf Islands, where more than 10,700 people voted by mail.
A number of knife battles, including at Coquitlam-Port Coquitlam, could depend on mail-in ballots.
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Election officials are bracing for delays in tight constituencies, where postal ballots could decide the outcome.
These include Quebec City _ an electoral district of Quebec City _ where Jean-Yves Duclos, a minister in the government of Liberal Leader Justin Trudeau, repelled a challenge from the Bloc Quebecois by 325 votes in the 2019 election. 1,400 voters mailed ballots.
One of the toughest electoral battles is in the Yukon, which dismisses a single MP. In the last election, the Liberals only beat the Conservatives by 153 votes. More than 1,800 voters sent out postal ballots.
Mail-order voters could also decide the outcome in Hochelaga, Que., Where the Liberals won just 328 votes last time.
Mail-in ballots in some jurisdictions could take up to 5 days to count: Perrault