Canada’s election rules require a recount if a candidates wins by less than 0.1% of the votes cast.
Officials had initially called Terrebonne for Auguste the day after the election, but during the validation process – which is when Election Canada confirms numbers but does not recount votes – Sinclair-Desgagné had taken the lead.
Superior Court of Quebec Justice Danielle Turcotte oversaw the recount.
Recounts are underway in three other ridings, according to the CBC.
The Terrebonne result adds to the political comeback for the Liberal Party in Canada, which earlier this year seemed destined for an electoral drubbing.
However, Donald Trump’s return to the White House and the subsequent trade war he sparked with Canada turned the country’s 28 April election into a referendum on how its leadership would deal with the United States.
Prime Minister Mark Carney’s Liberal Party won enough seats to form a government, but was three seats shy of an outright majority.
As results stand, the Conservative Party has 143 seats, the Bloc Québécois has 22, the NDP has seven, and the Green Party holds one seat.