It depends on if they've applied to vote by mail or not!
Elections Canada is warning Canadians that if they're diagnosed with COVID-19 over the next few days they may not be able to vote in the federal election.
According to one question in their FAQ section — "What if I develop symptoms of COVID-19 or test positive after advance polling days or on election day?" — Canadians with symptoms should not show up to an Elections Canada office or polling station on voting day at all.
Since the final deadline to request a mail-in ballot was on September 14, however, there are no other ways to vote if you can't show up to an Elections Canada office or polling station on September 20.
"Unfortunately, after Tuesday, September 14, electors who have or believe they have COVID-19 and who have not already applied to vote by mail will not be able to vote," Elections Canada says.
According to the current federal guidance, people should quarantine if they have been exposed to someone who has been diagnosed with (or "may have") COVID-19, whether they have symptoms or not. Anyone with COVID-19 or with COVID-19 symptoms are also being told to self-isolate at home.