Elections Canada has commissioned a poll that suggests 21.8 per cent of voters would prefer to cast their ballots by mail if there is a federal election this fall.
The poll shows 58 per cent would prefer to vote in-person at advance or election-day polling stations.
Fewer than 50-thousand people cast ballots by mail in last year's election, but research suggests that number could shoot up to about four-million.
That's prompting Elections Canada to warn an increased volume of mail-in ballots could delay the release of election results.