Supreme Court says it voided Terrebonne election over mail-in ballot error
Terrebonne election result overturned after Elections Canada ballot error See how the Supreme Court ruling could reshape the riding and what happens next
Canada's Supreme Court says it invalidated the Terrebonne riding result in the 2025 federal election after a mailin ballot problem at Elections Canada raised concerns about the integrity of the vote.
The court released its reasons on Friday, saying the agency made a serious administrative error when it failed to correct incorrect postal codes on specialballot envelopes before the election. Liberal candidate Tatiana Auguste had initially won the Montrealarea seat by one vote over Bloc Québécois incumbent Nathalie SinclairDesgagné.
The ruling followed a challenge from the Bloc candidate after a voter said her ballot was not counted because an Elections Canada envelope had the wrong postal code. The court said the error was known weeks before voting day, but not fixed in time. Elections Canada said it has already made changes to its specialballot process and will review the decision further.