Opinion polling for the 2025 Canadian federal election by constituency

Various polling organizations have conducted opinion polling in specific ridings in the lead up to the 45th Canadian federal election. The results of publicized opinion polling for individual constituencies are detailed in this article.

Given the expense of polling individual constituencies, constituencies are usually only polled if they are of some particular interest, e.g. they are thought to be marginal or facing an impending by-election. The constituencies polled are not necessarily representative of a national average swing. Under the first-past-the-post electoral system the true marginal seats, by definition, will be decisive as to the outcome of the election.

Constituency polls

Manitoba

Portage-Lisgar

Polling Firm	Last Date of Polling	Link	Liberal	Cons.	NDP	Green	PPC	Others	Undecided	Margin of Error^[1]	Sample Size^[2]	Polling Method^[3]
Mainstreet Research	June 14, 2023^[4]	^[1]	14	37	8	3	24	2	12	±5.2 pp	555	IVR

Winnipeg South Centre

Polling Firm	Last Date of Polling	Link	Liberal	Cons.	NDP	Green	PPC	Others	Undecided	Margin of Error^[1]	Sample Size^[2]	Polling Method^[3]
Mainstreet Research	June 14, 2023^[4]	^[2]	46	28	14	2	2	1	7	±4.7 pp	430	IVR

Ontario

Carleton

Polling Firm	Last Date of Polling	Link	Liberal	Cons.	NDP	Green	PPC	Others	Undecided	Margin of Error^[1]	Sample Size^[2]	Polling Method^[3]
Mainstreet Research	June 14, 2022^[4]	^[3]	38.0	41.7	9.5	2.0	0.8	1.5	5.8	±4.2 pp	555	IVR

Mississauga—Lakeshore

Polling Firm	Last Date of Polling	Link	Liberal	Cons.	NDP	Green	PPC	Others	Undecided	Margin of Error^[1]	Sample Size^[2]	Polling Method^[3]
Mainstreet Research	December 8, 2022^[4]	^[4]	47.5	38.8	6.0	4.6	3.1	2	1.5	±5.9 pp	279	IVR
Mainstreet Research	October 27, 2022^[4]	^[5]	43.5	40.8	6.9	5.7	1.2	1.9	N/A	±4.3 pp	521	IVR

Oxford

Polling Firm	Last Date of Polling	Link	Liberal	Cons.	NDP	Green	PPC	Others	Undecided	Margin of Error^[1]	Sample Size^[2]	Polling Method^[3]
Mainstreet Research	June 14, 2023^[4]	^[6]	36	36	7	4	5	7	5	±4.5 pp	473	IVR

Toronto—St. Paul's

Polling Firm	Last Date of Polling	Link	Liberal	Cons.	NDP	Green	PPC	Others	Undecided	Margin of Error^[1]	Sample Size^[2]	Polling Method^[3]
Mainstreet Research	June 2024^[4]	^[7]	35	36	9.9	4	2.5	1.5	11	N/A	257	IVR

Quebec

LaSalle—Émard—Verdun

Polling Firm	Last Date of Polling	Link	Liberal	Cons.	BQ	NDP	Green	PPC	Others	Margin of Error^[1]	Sample Size^[2]	Polling Method^[3]
Mainstreet Research	September 9, 2024^[4]	^[8]	24.1	7.3	29.6	23.0	—	—	—	±4.7 pp	443	IVR
Mainstreet Research	September 4, 2024^[4]	^[8]	23.3	8.1	30.7	19.4	—	—	—	—	—	IVR
Mainstreet Research	July 9, 2024^[4]	^[9]	29	14	26	25	3	1	—	±5.4 pp	329	IVR

Notes

Notes

¹ In cases when linked poll details distinguish between the margin of error associated with the total sample of respondents (including undecided and non-voters) and that of the subsample of decided/leaning voters, the latter is included in the table. Also not included is the margin of error created by rounding to the nearest whole number or any margin of error from methodological sources. Most online polls—because of their opt-in method of recruiting panellists which results in a non-random sample—cannot have a margin of error.^[10] In such cases, shown is what the margin of error would be for a survey using a random probability-based sample of equivalent size.^[11]

² Refers to the total sample size, including undecided and non-voters.

³ "Telephone" refers to traditional telephone polls conducted by live interviewers; "IVR" refers to automated Interactive Voice Response polls conducted by telephone; "online" refers to polls conducted exclusively over the internet; "telephone/online" refers to polls which combine results from both telephone and online surveys, or for which respondents are initially recruited by telephone and then asked to complete an online survey.

⁴ Poll was conducted using the riding boundaries that existed before the 2022 Canadian federal electoral redistribution was implemented.

References

^ "Mainstreet Research Survey - Portage-Lisgar". Archived from the original on September 2, 2023. Retrieved June 18, 2023.
^ "Mainstreet Research Survey - Winnipeg South-Centre". Archived from the original on September 2, 2023. Retrieved June 18, 2023.
^ "Archived copy" (PDF). Archived (PDF) from the original on June 23, 2022. Retrieved September 19, 2022.{{cite web}}: CS1 maint: archived copy as title (link)
^ "Mainstreet Research Survey - Mississauga-Lakeshore" (PDF). Archived (PDF) from the original on September 2, 2023. Retrieved February 4, 2023.
^ "Mainstreet Research Survey - Mississauga-Lakeshore" (PDF). Archived (PDF) from the original on September 2, 2023. Retrieved October 31, 2022.
^ "Mainstreet Research Survey - Oxford". Archived from the original on September 2, 2023. Retrieved June 18, 2023.
^ Quito Maggi. "Here's that @MainStResearch poll we did after advance polls". Archived from the original on June 25, 2024. Retrieved June 25, 2024.
^ ^a ^b "Bloc ahead in crucial Montreal byelection, according to poll". Montreal. September 12, 2024. Archived from the original on September 14, 2024. Retrieved September 15, 2024.
^ "LaSalle-Emard-Verdun Byelection Polling". Retrieved July 11, 2024.
^ "MRIA Responds to "Evaluating the Polls: An Open Letter to Ontario's Journalists"". Marketing Research and Intelligence Association. September 16, 2011. Archived from the original on February 22, 2012. Retrieved October 6, 2012.
^ American Association for Public Opinion Research (undated), Best Practices for Survey and Public Opinion Research Archived November 30, 2014, at the Wayback Machine, retrieved October 17, 2012

[1] "Mainstreet Research Survey - Portage-Lisgar". Archived from the original on September 2, 2023. Retrieved June 18, 2023.

[2] "Mainstreet Research Survey - Winnipeg South-Centre". Archived from the original on September 2, 2023. Retrieved June 18, 2023.

[3] "Archived copy" (PDF). Archived (PDF) from the original on June 23, 2022. Retrieved September 19, 2022.{{cite web}}: CS1 maint: archived copy as title (link)

[4] "Mainstreet Research Survey - Mississauga-Lakeshore" (PDF). Archived (PDF) from the original on September 2, 2023. Retrieved February 4, 2023.

[5] "Mainstreet Research Survey - Mississauga-Lakeshore" (PDF). Archived (PDF) from the original on September 2, 2023. Retrieved October 31, 2022.

[6] "Mainstreet Research Survey - Oxford". Archived from the original on September 2, 2023. Retrieved June 18, 2023.

[7] Quito Maggi. "Here's that @MainStResearch poll we did after advance polls". Archived from the original on June 25, 2024. Retrieved June 25, 2024.

[:BlocMTRL-8] "Bloc ahead in crucial Montreal byelection, according to poll". Montreal. September 12, 2024. Archived from the original on September 14, 2024. Retrieved September 15, 2024.

[9] "LaSalle-Emard-Verdun Byelection Polling". Retrieved July 11, 2024.

[10] "MRIA Responds to "Evaluating the Polls: An Open Letter to Ontario's Journalists"". Marketing Research and Intelligence Association. September 16, 2011. Archived from the original on February 22, 2012. Retrieved October 6, 2012.

[11] American Association for Public Opinion Research (undated), Best Practices for Survey and Public Opinion Research Archived November 30, 2014, at the Wayback Machine, retrieved October 17, 2012

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v t e 2025 Canadian federal election
Outgoing: Liberal minority Result: TBD
Bloc Québécois Yves-François Blanchet Conservative Pierre Poilievre Green Elizabeth May Liberal Justin Trudeau New Democrats Jagmeet Singh Independent candidates
Results breakdown Results by riding Endorsements MPs who stood down MPs who lost their seat Opinion polling (by constituency)