# Opinion polling for the 2021 Canadian federal election by constituency

Various polling organizations have been conducting opinion polling in specific ridings in the lead up to the 2021 Canadian federal election. The results of publicized opinion polling for individual constituencies are detailed in this article.
Given the cost associated with polling individual constituencies, polling typically occurs in constituencies that are of particular interest, such as those considered marginal or facing an impending by-election. However, it's important to note that the constituencies polled may not necessarily be representative of a national average swing. Under the first-past-the-post electoral system, true marginal seats, by definition, hold significant influence over the outcome of the election.

## Constituency polls
### Alberta
#### Banff—Airdrie

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Spadina Strategies | September 14, 2021 | HTML | 12.9 | 43.7 | 11.7 | 1.3 | 9.8 | 13.1 | 6.7 | ±5.23 pp | 350 | IVR |

#### Calgary Skyview

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | August 20, 2021 | PDF | 37.6 | 35.4 | 12.8 | 2.6 | 1.3 | 1.1 | 9.2 | ±5.6 pp | 303 | IVR |
| 2019 Election | October 21, 2019 | HTML | 28.3 | 52.5 | 14.9 | 1.6 | 1.2 | 1.5 | N/A | ±0.0 pp | 50,552 | Election |

#### Edmonton Centre

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | August 28, 2021 | PDF | 40 | 26 | 22 | 2 | 1 | 3 | 6 | ±5.6 pp | 303 | IVR |
| 2019 Election | October 21, 2019 | HTML | 33.0 | 41.5 | 20.6 | 2.6 | 1.5 | 0.8 | N/A | ±0.0 pp | 53,092 | Election |

#### Edmonton Griesbach

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Other | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 12, 2021 | PDF | 19.0 | 38.4 | 28.2 | 1.7 | 3.9 | 3.7 | 5.1 | ±4.6 pp | 454 | IVR |
| 2019 Election | October 21, 2019 | HTML | 17.3 | 51.4 | 25.1 | 2.5 | 2.3 | 1.4 | N/A | ±0.0 pp | 46,963 | Election |

#### Edmonton Mill Woods

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 9, 2021 | PDF | 37 | 35.4 | 14.4 | 1.4 | 6.9 | 1.6 | 3.3 | ±5 pp | 299 | IVR |
| 2019 Election | October 21, 2019 | HTML | 33.6 | 50.3 | 12.1 | 1.8 | 1.8 | 0.4 | N/A | ±0.0 pp | 53,177 | Election |

### British Columbia
#### Burnaby North—Seymour

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 7, 2021 | PDF | 28.1 | 29.6 | 26 | 5.2 | 2.3 | 0.9 | 7.9 | ±5 pp | 379 | IVR |
| Mainstreet Research | August 5, 2021 | HTML | 32.8 | 22.7 | 13.2 | N/A | N/A | 6.2 | 25.1 | ±4.1 pp | 558 | IVR |
| 2019 Election | October 21, 2019 | HTML | 35.5 | 19.5 | 32.3 | 9.6 | 2.2 | 1 | N/A | ±0.0 pp | 50,525 | Election |

#### Cloverdale—Langley City

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 12, 2021 | PDF | 28 | 40 | 17 | 3 | 7 | 3 | 2 | ±5.6 pp | 307 | IVR |

#### Delta

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | August 30, 2021 | PDF | 34 | 36 | 19 | 3 | 3 | 1 | 4 | ±5.6 pp | 304 | IVR |

#### Nanaimo—Ladysmith

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Oracle Poll | September 7, 2021 | HTML | 7.6 | 21.0 | 19.0 | 27.8 | 1.0 | N/A | 23.6 | ±4.4 pp | 500 | Telephone |
| 2019 Election | October 21, 2019 | HTML | 13.6 | 25.9 | 23.6 | 34.6 | 1.5 | 0.9 | N/A | ±0.0 pp | 53,296 | Election |

#### Pitt Meadows—Maple Ridge

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | August 28, 2021 | PDF | 26 | 33 | 28 | 3 | 2 | 2 | 6 | ±5.6 pp | 306 | IVR |

#### Port Moody—Coquitlam

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 13, 2021 | PDF | 24.4 | 29.0 | 29.5 | 3.6 | 8.9 | 2.0 | 2.7 | ±5.5 pp | 320 | IVR |

#### Surrey Centre

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | August 4, 2021 | PDF | 37 | 22 | 22 | 6 | 5 | 1 | 8 | ±6.3 pp | 285 | IVR |

#### Vancouver Granville

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | August 15, 2021 | PDF | 33 | 25 | 15 | 7 | 3 | 2 | 15 | ±5.9 pp | 280 | IVR |
| 2019 Election | October 21, 2019 | HTML | 26.6 | 21.9 | 13.1 | 5.1 | 0.8 | 32.6 | N/A | ±0.0 pp | 53,296 | Election |

#### Vancouver South

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | August 15, 2021 | PDF | 39 | 17 | 25 | 4 | 6 | 2 | 8 | ±6.3 pp | 242 | IVR |

#### West Vancouver—Sunshine Coast—Sea to Sky Country

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 5, 2021 | PDF | 25.1 | 42.3 | 15.1 | 6.2 | 5.1 | 0.7 | 5.4 | ±3.8 pp | 662 | IVR |
| Mainstreet Research | August 5, 2021 | HTML | 23.1 | 27.5 | 19.4 | 11.9 | N/A | 4 | 14.1 | ±3.9 pp | 624 | IVR |
| 2019 Election | October 21, 2019 | HTML | 34.9 | 26.7 | 13.9 | 22.4 | 1.6 | 0.5 | N/A | ±0.0 pp | 64,980 | Election |

### Manitoba
#### Charleswood—St. James—Assiniboia—Headingley

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Other | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | August 20, 2021 | PDF | 36.2 | 37.0 | 10.8 | 1.8 | 3.0 | 1.4 | 9.8 | ± pp | 317 | IVR |
| 2019 Election | October 21, 2019 | HTML | 35.5 | 40.7 | 14.2 | 4.7 | 4.3 | 0.7 | N/A | ±0.0 pp | 46,228 | Election |

#### Kildonan—St. Paul

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 14, 2021 | PDF | 33 | 30 | 18 | 5 | 7 | 1 | 7 | ±5.5 pp | 322 | IVR |
| 2019 Election | October 21, 2019 | HTML | 27.9 | 44.8 | 21.2 | 4.0 | 1.2 | 0.9 | N/A | ±0.0 pp | 44,298 | Election |

#### Winnipeg South

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 8, 2021 | PDF | 43.4 | 28.1 | 16.3 | 2 | 3.4 | 0 | 6.9 | ±5 pp | 304 | IVR |
| 2019 Election | October 21, 2019 | HTML | 42.1 | 38.7 | 13.9 | 4.3 | 0.9 | N/A | N/A | ±0.0 pp | 47,889 | Election |

### Newfoundland and Labrador
#### Bonavista—Burin—Trinity

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 9, 2021 | PDF | 43.2 | 30.5 | 10.5 | 0.6 | 3.4 | 1 | 10.9 | ±5 pp | 298 | IVR |
| 2019 Election | October 21, 2019 | HTML | 45.7 | 39.5 | 12.0 | 2.9 | N/A | N/A | N/A | ±0.0 pp | 32,179 | Election |

#### St. John’s East

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 7, 2021 | PDF | 45.3 | 15.2 | 26.7 | 1.6 | 2.2 | 0 | 9 | ±5.1 pp | 363 | IVR |
| 2019 Election | October 21, 2019 | HTML | 33.2 | 18.1 | 46.9 | 1.8 | N/A | N/A | N/A | ±0.0 pp | 42,940 | Election |

### New Brunswick
#### Fredericton

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 1, 2021 | PDF | 40 | 31 | 10 | 5 | 3 | 6 | 5 | ±5.6 pp | 307 | IVR |

#### Saint John—Rothesay

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 1, 2021 | PDF | 42 | 30 | 13 | 2 | 4 | 1 | 7 | ±5.7 pp | 300 | IVR |
| 2019 Election | October 21, 2019 | HTML | 37.4 | 34.0 | 12.2 | 10.1 | 3.1 | 3.2 | N/A | ±0.0 pp | 42,940 | Election |

### Nova Scotia
#### Cape Breton—Canso

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | August 19, 2021 | PDF | 39.3 | 37.6 | 8.2 | 1.9 | 3.6 | 2.3 | 7.1 | ±5 pp | 301 | IVR |
| 2019 Election | October 21, 2019 | HTML | 38.9 | 34.5 | 14.8 | 7.7 | 2.2 | 1.9 | N/A | ±0.0 pp | 42,940 | Election |

#### Sydney—Victoria

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 7, 2021 | PDF | 42 | 29 | 13 | 3 | 3 | 0 | 10 | ±4.7 pp | 442 | IVR |
| 2019 Election | October 21, 2019 | HTML | 30.9 | 27.7 | 20.1 | 5.5 | N/A | 21.3 | N/A | ±0.0 pp | 40,565 | Election |

#### West Nova

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 14, 2021 | PDF | 38 | 34 | 11 | 1 | 11 | 1 | 3 | ±6 pp | 262 | IVR |
| 2019 Election | October 21, 2019 | HTML | 36.4 | 39.3 | 10.7 | 12.7 | N/A | 0.9 | N/A | ±0.0 pp | 46,798 | Election |

### Ontario
#### Aurora—Oak Ridges—Richmond Hill

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Other | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | August 23, 2021 | HTML | 47 | 34 | 12 | 2 | 4 | 2 | N/A | ±5 pp | 309 | IVR |
| 2019 Election | October 21, 2019 | HTML | 42.4 | 44.4 | 7.2 | 4.1 | 1.0 | 1.0 | N/A | ±0.0 pp | 53,109 | Election |

#### Davenport

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 8, 2021 | PDF | 46 | 11 | 28 | 6 | 3 | 2 | 5 | ±5.6 pp | 303 | IVR |

#### Elgin—Middlesex—London

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 11, 2021 | PDF | 32 | 36 | 14 | 2 | 10 | 1 | 5 | ±5.1 pp | 294 | IVR |

#### Flamborough—Glanbrook

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 15, 2021 | PDF | 30 | 33 | 16 | 6 | 7 | 0 | 7 | ±5.6 pp | 303 | IVR |
| 2019 Election | October 21, 2019 | HTML | 36.5 | 39.2 | 16.5 | 6.13 | 1.5 | N/A | N/A | ±0.0 pp | 62,920 | Election |

#### Hamilton East—Stoney Creek

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | August 27, 2021 | PDF | 28 | 25 | 26 | 5 | 2 | 5 | 10 | ±5.6 pp | 305 | IVR |

#### Kanata—Carleton

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 8, 2021 | PDF | 36.3 | 32.8 | 18.5 | 4.5 | 1.5 | 0.2 | 6.2 | ±5 pp | 297 | IVR |
| 2019 Election | October 21, 2019 | HTML | 43 | 36.5 | 12.5 | 6.6 | 1.4 | N/A | N/A | ±0.0 pp | 66,772 | Election |

#### King—Vaughan

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 16, 2021 | PDF | 48.1 | 38.6 | 7.4 | 1.6 | 3.7 | 0.2 | 0.4 | ±5.6 pp | 298 | IVR |
| 2019 Election | October 21, 2019 | HTML | 45 | 43.2 | 6.7 | 3.9 | 1.1 | N/A | N/A | ±0.0 pp | 64,446 | Election |

#### Kitchener Centre

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 18, 2021 | HTML | 34 | 27 | 13 | 20 | 5 | 0 | N/A | ±5.9 pp | 287 | IVR |
| Mainstreet Research | August 24, 2021 | PDF | 27.8 | 23.4 | 23.6 | 11.9 | 1.2 | 6.7 | 5.5 | ±5.9 pp | 280 | IVR |
| Mainstreet Research | August 5, 2021 | HTML | 25.8 | 17.9 | 11.1 | 14.3 | N/A | 4 | 26.8 | ±4 pp | 601 | IVR |
| 2019 Election | October 21, 2019 | HTML | 36.7 | 23.8 | 11.3 | 26 | 1.9 | 0.4 | N/A | ±0.0 pp | 55,374 | Election |

#### Niagara Centre

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 10, 2021 | PDF | 35 | 27 | 17 | 2 | 10 | 1 | 8 | ±5 pp | 301 | IVR |

#### Oakville

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | August 30, 2021 | PDF | 40 | 39 | 11 | 1 | 3 | 1 | 5 | ±5.5 pp | 314 | IVR |

#### Ottawa Centre

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | August 23, 2021 | PDF | 42 | 21 | 28 | 5 | 1 | 1 | 2 | ±5.3 pp | 344 | IVR |

#### Parkdale—High Park

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | August 5, 2021 | HTML | 34.5 | 14.3 | 16.6 | 8.8 | N/A | 2.9 | 23 | ±4 pp | 600 | IVR |
| 2019 Election | October 21, 2019 | HTML | 47.4 | 13.2 | 31.5 | 6.4 | 1.1 | 1.1 | N/A | ±0.0 pp | 60,887 | Election |

#### Peterborough—Kawartha

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 1, 2021 | PDF | 25.8 | 37.5 | 17.9 | 8.6 | 3.4 | 0.9 | 5.9 | ±5.7 pp | 291 | IVR |
| 2019 Election | October 21, 2019 | HTML | 39.3 | 34.9 | 17.1 | 7.1 | 1.3 | 0.5 | N/A | ±0.0 pp | 69,801 | Election |

#### Spadina—Fort York

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | August 15, 2021 | PDF | 47.5 | 18.9 | 12 | 3.7 | 3.9 | 3.9 | 10.1 | ±4.1 pp | 574 | IVR |
| 2019 Election | October 21, 2019 | HTML | 55.8 | 17.6 | 20.1 | 5.2 | 1.1 | 1.1 | N/A | ±0.0 pp | 60,887 | Election |

#### St. Catharines

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | August 2, 2021 | PDF | 30 | 34 | 21 | 2 | 4 | 3 | 7 | ±5.9 pp | 273 | IVR |

#### Toronto Centre

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | August 5, 2021 | HTML | 39.9 | 8.6 | 9.5 | 15.5 | N/A | 2.3 | 24.3 | ±4.1 pp | 574 | IVR |
| 2020 By-election | October 26, 2020 | HTML | 42 | 5.7 | 17 | 32.7 | 1.1 | 1.6 | N/A | ±0.0 pp | 25,205 | Election |
| 2019 Election | October 21, 2019 | HTML | 57.4 | 12.1 | 22.3 | 7.1 | N/A | 1.2 | N/A | ±0.0 pp | 54,512 | Election |

#### Windsor—Tecumseh

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 16, 2021 | PDF | 26.8 | 18.8 | 28.1 | 3.5 | 16.6 | 0.8 | 5.5 | ±4.9 pp | 390 | IVR |
| 2019 Election | October 21, 2019 | HTML | 33.4 | 27.8 | 32.3 | 3.8 | 2.2 | 0.3 | N/A | ±0.0 pp | 56,957 | Election |

### Prince Edward Island
#### Malpeque

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | August 5, 2021 | HTML | 36.5 | 25.3 | 7 | 12.1 | N/A | 0.2 | 19 | ±5.9 pp | 280 | IVR |
| 2019 Election | October 21, 2019 | HTML | 41.4 | 25.6 | 6.5 | 26.5 | N/A | 0.4 | N/A | ±0.0 pp | 23,039 | Election |

### Quebec
#### Abitibi—Témiscamingue

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Bloc | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| SOM | March 29, 2021 | HTML | 25 | 9 | 5.5 | 20 | N/A | N/A | 6 | 35 | ±5.1 pp | 501 | IVR |
| 2019 Election | October 21, 2019 | HTML | 25 | 15 | 10 | 45.5 | 4 | 1 | 0 | N/A | ±0.0 pp | 50,155 | Election |

#### Beauport—Limoilou

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Bloc | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 4, 2021 | PDF | 26 | 30 | 12 | 19 | 2 | 1 | 5 | 5 | ±5.5 pp | 313 | IVR |

#### Berthier—Maskinongé

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Bloc | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 10, 2021 | PDF | 16.7 | 14.2 | 14.1 | 35.1 | 3.8 | 7.4 | 1.3 | 7.5 | ±5.6 pp | 308 | IVR |

#### Châteauguay—Lacolle

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Bloc | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 4, 2021 | PDF | 33 | 17 | 8 | 27 | 6 | 1 | 4 | 5 | ±5.1 pp | 370 | IVR |

#### Jonquière

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Bloc | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 2, 2021 | PDF | 24.0 | 27.7 | 6.6 | 24.5 | 4.2 | 1.5 | 2.9 | 8.5 | ±5.5 pp | 314 | IVR |

#### La Prairie

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Bloc | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 11, 2021 | PDF | 31.0 | 14.4 | 5.4 | 40.8 | 0.4 | 2.4 | 2.3 | 3.3 | ±5.2 pp | 355 | IVR |

#### Longueuil—Saint-Hubert

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Bloc | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | August 27, 2021 | PDF | 42.4 | 5.1 | 6.1 | 34.1 | 4.0 | 1.7 | 0.3 | 6.4 | ±5.6 pp | 311 | IVR |
| 2019 Election | October 21, 2019 | HTML | 34.2 | 6.3 | 8.5 | 38.5 | 6.1 | 1.3 | 0.4 | N/A | ±0.0 pp | 59,844 | Election |

#### Pontiac

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Bloc | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | August 19, 2021 | PDF | 33 | 24 | 14 | 9 | 2 | 4 | 2 | 12 | ±4.9 pp | 398 | IVR |
| 2019 Election | October 21, 2019 | HTML | 48.9 | 16.8 | 10.5 | 16.1 | 6.1 | 1.3 | 0.4 | N/A | ±0.0 pp | 62,508 | Election |

#### Rivière-des-Mille-Îles

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Bloc | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | August 31, 2021 | PDF | 29 | 17 | 8 | 33 | 3 | 3 | 2 | 5 | ±4.7 pp | 436 | IVR |

#### Shefford

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Bloc | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | August 29, 2021 | PDF | 29 | 19 | 3 | 31 | 5 | 3 | 3 | 6 | ±5.5 pp | 322 | IVR |

#### Thérèse-De Blainville

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Bloc | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 13, 2021 | PDF | 38.2 | 10.8 | 4.6 | 40.1 | 1.1 | 2.8 | 0.2 | 2.2 | ±6.6 pp | 221 | IVR |

#### Trois-Rivières

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Bloc | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | September 15, 2021 | PDF | 28 | 32 | 2 | 28 | 1 | 0 | 1 | 7 | ±5 pp | 300 | IVR |
| 2019 Election | October 21, 2019 | HTML | 26 | 25.2 | 16.7 | 28.5 | 2.5 | 0.9 | 0.2 | N/A | ±0.0 pp | 60,538 | Election |

### Saskatchewan
#### Saskatoon West

| Polling Firm | Last Date of Polling | Link | Liberal | Cons. | NDP | Green | PPC | Others | Undecided | Margin of Error | Sample Size | Polling Method |
| Mainstreet Research | August 25, 2021 | PDF | 19 | 28.6 | 28.8 | 2.4 | 5.2 | 1.2 | 15.5 | ±5.6 pp | 305 | IVR |
| 2019 Election | October 21, 2019 | HTML | 7.3 | 47.7 | 40.3 | 2.7 | 2.0 | N/A | N/A | ±0.0 pp | 38,985 | Election |