OTTAWA—Canada’s chief electoral officer says that in the event of a snap election during the pandemic, Canadians would have better access to the polls with a longer campaign—even though a shorter one appears more likely. Stéphane Perrault says the time required to send out up to five million mail-in ballots, work with remote communities and install health measures for a countrywide vote amid a deadly second COVID-19 wave demands a longer writ period. “That is a considerable undertaking,” he said, referring just to the mail-in ballots. But if the Liberal government triggers an election, it would likely result in a shorter campaign so the Grits could seize on their relative popularity, warned Conservative MP Tom Lukiwski. “If a government chooses to call an election prior to the fixed election date, normally they do so because they are ahead in the polls. And it seems to follow then that if that …