Liberals won Terrebonne, Que., riding by 1 vote — but this woman's Bloc ballot wasn't counted

Bloc Québécois voter's mail-in ballot was returned to sender after the election
Elections Canada said the return address printed on this elector's return envelope was incorrect — specifically, part of the postal code.

Courts could force byelection, expert says
But Ara Karaboghossian, professor of political science at Vanier College, says there's a chance this saga isn't over. He said the election could be contested through Elections Canada's contested elections process. He said irregularities can be the basis for contesting a decision
"It says that if there is any type of irregularity that has an effect on the result, then the person can actually contest," said Karaboghossian. "The elector can contest. A candidate can contest. It's open to anybody."
The case will hinge on what an irregularity is, but it seems to Karaboghossian that a misprint on a self-addressed, stamped envelope could fall into that category.

Good news for Bloc Québécois