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2026 Terrebonne federal by-election

2026 Terrebonne federal by-election
TBD 2026
Riding of Terrebonne
 
LPC
BQ
Candidate Tatiana Auguste Nathalie Sinclair-Desgagné
Party Liberal Bloc Québécois
Last election 38.74%[a] 38.74%[a]


A by-election will be held in the federal riding of Terrebonne in Quebec, Canada, after the Supreme Court of Canada granted an appeal on February 13, 2026, by a Bloc Québécois candidate who lost the federal election in Terrebonne riding by a single vote. The annulment of the result vacated the seat won by Liberal Tatiana Auguste and triggered a by-election.[1]

Background

The 2025 federal election result in Terrebonne was contested by the Bloc Québécois candidate, defeated MP Nathalie Sinclair-Desgagné, after a judicial recount awarded the seat to Liberal candidate Tatiana Auguste by one vote. The result was challenged due to a printing error by Elections Canada on a return envelope for mail-in ballots which resulted in an envelope containing a vote for the Bloc Québécois candidate being returned to sender. The Supreme Court of Canada overturned a lower court decision and annulled the result, vacating the seat and requiring a by-election.[1]

Timing

A writ for the by-election must be issued no sooner than February 27 and no later than August 1, 2026.[2] Under the Canada Elections Act, the minimum length of a campaign is 36 days between dropping the writ and election day, but must not exceed 50 days and the by-election must occur on a Monday within that time-frame.[3] Accordingly, the earliest a by-election could be held is April 6 and the latest is September 28, 2026.[2]

Result

Canadian federal by-election, TBD, 2026: Terrebonne
2025 result annulled by Supreme Court
Party Candidate Votes % ±%
Liberal Tatiana Auguste (presumptive)
Bloc Québécois Nathalie Sinclair-Desgagné (presumptive)
Conservative TBD
New Democratic TBD
Green TBD
People's TBD
Total valid votes/expense limit
Total rejected ballots
Turnout
Eligible voters
Source:

Previous results

2025 nullified result
2025 Canadian federal election: Terrebonne
Party Candidate Votes % ±% Expenditures
Liberal Tatiana Auguste 23,352 38.741 +9.37
Bloc Québécois Nathalie Sinclair-Desgagné 23,351 38.739 −2.66
Conservative Adrienne Charles 10,961 18.18 +7.72
New Democratic Maxime Beaudoin 1,556 2.58 −4.07
Green Benjamin Rankin 630 1.05 −0.38
People's Maria Cantore 428 0.71 −1.97
Total valid votes/expense limit 60,278 98.63
Total rejected ballots 840 1.37
Turnout 61,118 68.12
Eligible voters 89,725
Liberal notional gain from Bloc Québécois Swing +6.02
Source: Elections Canada[4][5]
Notes: Results were annulled by the Supreme Court of Canada on February 13, 2026.[6] The results were also subject to an automatic judicial recount on May 7, 2025.[7] The number of eligible voters does not include election day registrations.
2021 valid result (redistributed)
2021 federal election redistributed results[8]
Party Vote %
  Bloc Québécois 23,298 41.40
  Liberal 16,528 29.37
  Conservative 5,886 10.46
  New Democratic 3,742 6.65
  People's 1,506 2.68
  Green 802 1.43
  Others 4,518 8.03
2021 valid result (actual)
2021 Canadian federal election: Terrebonne
Party Candidate Votes % ±% Expenditures
Bloc Québécois Nathalie Sinclair-Desgagné 24,270 41.2 -9.4 $28,625.35
Liberal Eric Forget 17,475 29.6 +0.3 $6,336.80
Conservative Frédérick Desjardins 6,183 10.5 +2.9 $8,029.08
New Democratic Luke Mayba 3,913 6.6 -0.9 $7,745.37
Independent Michel Boudrias 3,864 6.6 N/A $16,574.97
People's Louis Stinziani 1,594 2.7 +2.0 $0.00
Green Dave Hamelin-Schuilenburg 847 2.4 -2.3 $103.94
Free Nathan Fortin-Dubé 803 1.4 N/A $25.71
Total valid votes/expense limit 58,949 97.8 – $119,339.41
Total rejected ballots 1,355 2.2
Turnout 60,304 66.4
Eligible voters 90,835
Bloc Québécois hold Swing -4.9
Source: Elections Canada[9]

References

  1. ^ a b "Supreme Court of Canada annuls single-vote win in Terrebonne riding, vacating seat". Montreal Gazette. 2026-02-13. Retrieved 2026-02-13.
  2. ^ a b "A Federal Seat Is Vacant in Terrebonne". Elections Canada. February 16, 2026. Retrieved February 16, 2026.
  3. ^ "Result of the 45th General Election in Terrebonne Annulled". Elections Canada. February 13, 2026. Retrieved February 13, 2026.
  4. ^ "Voter information service". Elections Canada. Retrieved May 11, 2025.
  5. ^ "Election Night Results - Electoral Districts". Elections Canada. Retrieved May 11, 2025.
  6. ^ Major, Darren (February 13, 2026). "Supreme Court nullifies Liberal single-vote election win in Montreal-area riding". CBC News.
  7. ^ Lopez Stephen, Benjamin (May 10, 2025). "Quebec riding of Terrebonne flips to Liberals after recount shows candidate won by single vote". CBC News. Retrieved May 11, 2025.
  8. ^ "Transposition of Votes from the 44th General Election to the 2023 Representation Orders". Elections Canada. Retrieved 9 April 2024.
  9. ^ "List of confirmed candidates – September 20, 2021 Federal Election". Elections Canada. Retrieved 2 September 2021.

Notes

  1. ^ a b The 2025 election result was annulled by the Supreme Court of Canada. In the last validated election (September 20, 2021), the Liberals received 29.37% of the vote.

See also

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