The online survey, conducted from June 19 to 21, polled 1,528 Canadians and 1,015 Americans. A margin of error cannot be associated with a non-probability sample in a panel survey. A probability sample of this size would yield a margin of error no greater than plus or minus 2.5 per cent, 19 times out of 20, for the Canadian sample and plus or minus 3.1 per cent, 19 times out of 20, for the American sample.



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