Terrebonne () is a provincial electoral district in Quebec, Canada. that elects members to the National Assembly of Quebec. It consists of all of the city of Terrebonne except for the former cities of La Plaine and Lachenaie.

It was created for the 1867 election (and an electoral district of that name existed earlier in the Legislative Assembly of the Province of Canada and the Legislative Assembly of Lower Canada).

In the change from the 2001 to the 2011 electoral map, it lost part of the city of Terrebonne to the L'Assomption electoral district.

In 2026, it lost the community of Saint-Louis-de-Terrebonne.

Members of the Legislative Assembly / National Assembly

Historical controversies In the 1935 provincial election, the election of Athanase David was contested on the ground that the ballot papers were not printed in the form prescribed under the Election Act. At the subsequent hearing, the judge ruled that all cast ballots were thus void. Immediately afterwards, the returning officer announced that, as this resulted in a 0–0 tie, he cast his deciding vote in favour of David. The returning officer's action was considered to have been without precedent anywhere in the world in countries with parliamentary-style legislatures. The Conservatives lodged an appeal, but the result was upheld by the Quebec Court of Appeal in April 1936. David would become the only member of the Assembly in Quebec history to be elected on only one cast vote.

In the March 2025 provincial by-election, while the riding flipped from the CAQ back to the PQ after being held for two elections by Pierre Fitzgibbon, Québec solidaire was also squeezed out of third place by the PLQ, dropping in support by over eight percentage points (while the Liberals had lost two points). Nadia Poirier, a second-time QS nominee, complained afterwards about the lack of support she received from the party, noting that none of its 12 MNAs came out to help in her campaign and that the party had solidarity in name only. QS responded that, as Terrebonne had been a péquiste stronghold for 25 years, it allocated its resources based on a serious analysis of its chances of winning. In June 2025, Poirier announced that she was leaving QS to join the PQ.

Election results

2022 Quebec general election redistributed results Party Vote %   Coalition Avenir Québec 18,469 50.36   Parti Québécois 7,013 19.12   Québec solidaire 4,646 12.67   Liberal 3,452 9.41   Conservative 2,758 9.41   Others 334 0.91

Change is from redistributed results. * Result compared to Action démocratique

2008 Quebec general election redistributed results Party Vote %   Parti Québécois 13,706 45.62   Liberal 8,173 27.20   Action démocratique 6,444 21.45   Green 955 3.18   Québec solidaire 766 2.55

* Result compared to UFP

^PQ result compared to Ralliement national

See also List of Quebec provincial electoral districts Canadian provincial electoral districts

References

External links Information Elections Quebec

Election results Election results (National Assembly) Election results (QuébecPolitique)

Maps 2011 map (PDF) 2001 map (Flash) 2001–2011 changes (Flash) 1992–2001 changes (Flash) Electoral map of Lanaudière region Quebec electoral map, 2011