Pivotal Terrebonne Byelection Sees Preliminary 20% Voter Turnout in Advance Polls

People arrive to cast their ballots at a polling station on federal election day in Montreal, on April 28, 2025. The Canadian Press/Graham Hughes

Almost 38,000 people voted in the advance polls in three byelections that could give Prime Minister Mark Carney’s Liberals a majority government, with the highest advance turnout in Terrebonne.

Preliminary data from Elections Canada says 18,200 people in the Quebec riding cast ballots in advance elections, which amounts to almost 20 percent of people on the voters’ list.

The riding saw 68 percent voter turnout in the 2025 election.

The Toronto area ridings saw lower degrees of voter turnout at the advance polls, with 10,300 ballots already cast in Scarborough Southwest and 9,400 in University—Rosedale. This amounts to 12 and 10 percent voter turnout respectively.

Both the Liberals and Bloc Québécois have been making a strong push in Terrebonne, where a single vote gave Liberal Tatiana Auguste the victory over Bloc incumbent Nathalie Sinclair-Desgagné last year.

In February, the Supreme Court of Canada annulled the result of that vote, citing a clerical error on the return address on mail-in ballots.

Nearly 1,200 absentee ballot kits have been requested for Terrebonne as of April 6, according to Elections Canada.

Just over 1,100 mail-in ballots were cast in the riding during the general election last year.

Elections Canada reported about 20,000 advance ballots were cast in Terrebonne in the 2025 general election, with more than 21,000 cast in University—Rosedale and more than 19,400 in Scarborough Southwest.

An adapted ballot has been created for the Terrebonne bylection, as Elections Canada expected an influx of independent candidates running as part of the Longest Ballot Committee protest against first-past-the-post results.

That means in the two Toronto byelections, voters will receive a ballot with all candidate names already printed on it, while in Terrebonne the ballot will be blank and voters will have to write in the name of their preferred candidate by hand. A list of all candidates will be provided at each voting booth.

There are 48 candidates on the Terrebonne ballot, 41 of them running without a party banner.

An adapted ballot was previously used in the byelection last August in Battle River—Crowfoot in Alberta, when 214 candidates ran, more than 200 of them under the Longest Ballot Committee protest. Elections Canada opted to use the adapted ballot after protests during the general election and previous byelections led to difficulties for voters and vote counters, due to the sheer length of the physical ballot.

If the Liberals win all three byelections, they will have 173 seats in the House of Commons, giving them a clear majority where they would not need opposition support to pass legislation.

If the Grits only win two, they will have still hit the 172 seat threshold for a majority, but Speaker Francis Scarpaleggia, a Quebec Liberal, only votes in the case of a tie. This means the Liberals would have 171 voting members in the House, same as the opposition.

To maintain neutrality, the speaker traditionally maintains the status quo if they have to vote. This means they normally would not pass new legislation, but would support the government on confidence matters.

The Toronto area byelections are being held to replace former cabinet ministers Chrystia Freeland and Bill Blair, both of whom resigned to take other opportunities.