Terrebonne by-election
Tatiana Auguste (Liberal) held Terrebonne for the Liberals at the by-election of 2026-04-13 by 668 votes (1.4 points) with 48.3% of the vote; Nathalie Sinclair-Desgagné (Bloc Québécois) was second with 46.9%.
IThe result
Turnout 51.1% of 91,534 electors · 46,443 valid votes · 371 rejected ballots · 48 candidates
| Candidate | Party | Votes | % | 2025 | ± |
|---|---|---|---|---|---|
| Tatiana Auguste | Liberal | 22,445 | 48.3% | 38.7% | +9.6 |
| Nathalie Sinclair-Desgagné | Bloc Québécois | 21,777 | 46.9% | 38.7% | +8.2 |
| Adrienne Charles | Conservative | 1,548 | 3.3% | 18.2% | −14.9 |
45 further candidates, each under 1% of the vote
| Maxime Beaudoin | New Democratic | 248 | 0.5% |
| Benjamin Rankin | Green | 194 | 0.4% |
| Maria Cantore | People's | 113 | 0.2% |
| Mark Moutter | Parti Rhinocéros Party | 61 | 0.1% |
| Julie St-Amand | Independent | 7 | 0.0% |
| Nicolas Champagne | Independent | 5 | 0.0% |
| Geneviève Dorval | Independent | 4 | 0.0% |
| Myriam Beaulieu | Independent | 3 | 0.0% |
| Sébastien CoRhino | No Affiliation | 3 | 0.0% |
| Samuel Pignedoli | Independent | 3 | 0.0% |
| Myles René Laurent St. Pierre | Independent | 3 | 0.0% |
| Alex Banks | Independent | 2 | 0.0% |
| Sophia Bearden | Independent | 2 | 0.0% |
| Samuel Ducharme | Independent | 2 | 0.0% |
| Elizabeth Dupuis | Independent | 2 | 0.0% |
| Laurie Goble | Independent | 2 | 0.0% |
| Seyed Hosseini Lavasani | Independent | 2 | 0.0% |
| Ryan Huard | Independent | 2 | 0.0% |
| Krzysztof Krzywinski | Independent | 2 | 0.0% |
| Bryan Wang | Independent | 2 | 0.0% |
| Danica Boe | Independent | 1 | 0.0% |
| Jenny Cartwright | Independent | 1 | 0.0% |
| Jaël Champagne Gareau | Independent | 1 | 0.0% |
| Jayson Cowan | Independent | 1 | 0.0% |
| Michael Dyck | Independent | 1 | 0.0% |
| Anthony Hamel | Independent | 1 | 0.0% |
| Chris Kowalchuk | Independent | 1 | 0.0% |
| John Francis O'Flynn | Independent | 1 | 0.0% |
| Spencer Rocchi | Independent | 1 | 0.0% |
| Pascal St-Amand | Independent | 1 | 0.0% |
| Vivian Unger | Independent | 1 | 0.0% |
| Jeani Boudreault | Independent | 0 | 0.0% |
| Gerrit Dogger | Independent | 0 | 0.0% |
| Ysack Dupont | Independent | 0 | 0.0% |
| Alexandra Engering | Independent | 0 | 0.0% |
| Emily Goose | Independent | 0 | 0.0% |
| Kazimir Haykowsky | Independent | 0 | 0.0% |
| Jack Jean-Louis | Independent | 0 | 0.0% |
| Joseph Alain Matthew Laveault | Independent | 0 | 0.0% |
| Jocelyn LeBlanc-Courchaine | Independent | 0 | 0.0% |
| Lanna Palsson | Independent | 0 | 0.0% |
| Lajos Polya | Independent | 0 | 0.0% |
| Kayll Schaefer | Independent | 0 | 0.0% |
| Justin Steinburg | Independent | 0 | 0.0% |
| Alon Weinberg | Independent | 0 | 0.0% |
An unusually long ballot. 48 candidates stood here.
IIWhy the seat was empty
: The Supreme Court of Canada annuls the 2025 election in Terrebonne, won by Tatiana Auguste for the Liberals, and the seat is vacant.
The Supreme Court of Canada annulled the 2025 election here on (Sinclair-Desgagné v. Chief Electoral Officer of Canada et al., docket 42076). Before the annulment the seat was held by Tatiana Auguste, a Liberal, as the 2025 result left it.
Source: scc-csc.ca · the event in the ledger
IIIAgainst 2025
The Liberal share here was 48.3% at the by-election of and 38.7% in the 2025 election.
Shares are of valid votes in this riding at each vote. The 2025 figures are the general election's, from Elections Canada's official voting results, the result the court later annulled; the riding's page has that result in full.
IVThe House after it
After the event of April 13, 2026, "By-elections in University—Rosedale, Scarborough Southwest and Terrebonne", the Liberals hold 174 of 343 seats, the Conservatives 140, the Bloc Québécois 22, the NDP 6, and the Greens 1.
This event in the ledger · How the House stands today · Terrebonne's page