# Opinion polling for the 2018 Quebec general election

This table provides a list of scientific, public opinion polls that were conducted from the 2014 Quebec general election leading up to the 2018 Quebec general election, which took place as scheduled on October 1, 2018.
| Polling firm | Last date of polling | Link | QLP | PQ | CAQ | QS | Other | Lead | Sample Size | Margin of Error | Method |
| 2018 election | October 1, 2018 | HTML | 24.8 | 17.1 | 37.4 | 16.1 | 4.6 | 12.6 | — | — | — |
| Forum | September 30, 2018 | PDF | 28 | 20 | 33 | 17 | 2 | 5 | — | — | IVR |
| Research Co. | September 30, 2018 | HTML | 30 | 18 | 33 | 16 | 3 | 3 | 625 | 3.9% | Online |
| Angus Reid Institute | September 30, 2018 | PDF | 25 | 18 | 32 | 20 | 5 | 7 | 635 | 4% | Online |
| Ipsos | September 28, 2018 | PDF | 31 | 18 | 32 | 16 | 3 | 1 | 1250 | 3.2% | Online/telephone |
| Mainstreet | September 27, 2018 | HTML | 29.0 | 19.5 | 31.5 | 16.3 | 3.6 | 2.5 | 1760 | 2.3% | IVR |
| Leger | September 27, 2018 | PDF | 30 | 19 | 32 | 17 | 2 | 2 | 1502 | 2.7% | Online |
| Ipsos | September 23, 2018 | PDF | 30 | 20 | 30 | 16 | 4 | 0 | 1250 | 3.2% | Online/telephone |
| Research Co. | September 22, 2018 | HTML | 30 | 19 | 32 | 16 | 3 | 2 | 601 | 4.0 | Online |
| Third televised debate (in French, September 20, 2018) ||||||||||||
| Second televised debate (in English, September 17, 2018) ||||||||||||
| Leger | September 17, 2018 | PDF | 30 | 21 | 31 | 14 | 4 | 1 | 3017 | 1.78% | Online |
| CROP | September 17, 2018 | PDF | 37 | 16 | 30 | 14 | 3 | 7 | 1000 | — | Online |
| Forum | September 15, 2018 | PDF | 22 | 24 | 32 | 19 | 2 | 8 | 1274 | 3% | IVR |
| Mainstreet | September 15, 2018 | HTML | 28.6 | 21.5 | 29.1 | 17.1 | 3.6 | 0.5 | 1665 | 2.4% | IVR |
| First televised debate (in French, September 13, 2018) ||||||||||||
| Leger | September 10, 2018 | PDF | 29 | 21 | 35 | 11 | 4 | 6 | 1014 | 3.1% | Online |
| Mainstreet | September 7, 2018 | HTML | 27.2 | 21.1 | 32.2 | 15.7 | 3.8 | 5.0 | 2531 | 1.9% | IVR |
| Leger | August 28, 2018 | PDF | 32 | 19 | 37 | 8 | 4 | 5 | 1010 | 3.1% | Online |
| Election period officially begins (August 24, 2018) ||||||||||||
| Forum | August 23, 2018 | PDF | 22 | 21 | 42 | 13 | 2 | 20 | 965 | 3% | IVR |
| Ipsos | August 21, 2018 | PDF | 29 | 18 | 36 | 11 | 6 | 7 | 1501 | 2.9% | Online/Telephone |
| Mainstreet | August 20, 2018 | PDF | 25.6 | 17.7 | 32.1 | 13.9 | 10.7 | 6.5 | 1647 | 2.4% | IVR |
| CROP | August 20, 2018 | PDF | 36 | 15 | 38 | 10 | 2 | 2 | 1000 | 3.1% | Online |
| Leger | August 14, 2018 | PDF | 30 | 18 | 36 | 10 | 6 | 6 | 2488 | 2.0% | Online |
| Mainstreet | July 29, 2018 | HTML | 29.7 | 16.5 | 32.3 | 11.7 | 9.8 | 2.6 | 1320 | 2.7% | IVR |
| CROP | June 19, 2018 | PDF | 33 | 14 | 39 | 11 | 3 | 6 | 1002 | 3.1% | Online |
| Leger | June 10, 2018 | PDF | 28 | 19 | 37 | 9 | 7 | 9 | 3234 | 1.7% | Online |
| Leger | May 8, 2018 | PDF | 26 | 22 | 35 | 10 | 6 | 9 | 1018 | 3.1% | Online |
| Ipsos | May 2, 2018 | HTML | 32 | 20 | 35 | 8 | 5 | 3 | 2001 | 2.5% | Online |
| CROP | April 2018 | PDF | 35 | 16 | 35 | 12 | 2 | 0 | 1005 | — | Online |
| Mainstreet | April 9, 2018 | HTML | 29.7 | 16.2 | 30.1 | 12.0 | 12.0 | 0.4 | 1200 | 2.8% | IVR |
| Leger | April 8, 2018 | PDF | 29 | 21 | 34 | 9 | 7 | 5 | 1019 | 3.1% | Online |
| CROP | March 2018 | PDF | 35 | 14 | 37 | 12 | 2 | 2 | 1026 | — | Online |
| Mainstreet | March 1, 2018 | HTML | 27.8 | 19.8 | 32.0 | 10.8 | 9.6 | 4.2 | 1062 | 3.1% | IVR |
| Leger | March 1, 2018 | PDF | 26 | 22 | 37 | 9 | 7 | 11 | 993 | 3.1% | Online |
| Ipsos | February 4, 2018 | HTML | 30 | 23 | 34 | 8 | 6 | 4 | 1297 | 4.4% | Online/telephone |
| Leger | January 24, 2018 | PDF | 28 | 20 | 39 | 9 | 4 | 11 | 983 | 3.1% | Online |
| CROP | January 2018 | PDF | 36 | 18 | 34 | 9 | 3 | 2 | 1000 | — | Online |
| Mainstreet | January 6, 2018 | HTML | 31.4 | 18.1 | 31.6 | 14.9 | 4.0 | 0.2 | 965 | 3.1% | IVR |
| CROP | December 2017 | PDF | 36 | 14 | 38 | 10 | 2 | 2 | 1000 | — | Online |
| Mainstreet | December 8, 2017 | PDF | 29 | 24 | 31 | 15 | 2 | 2 | 1500 | 2.5% | Telephone |
| Leger | November 30, 2017 | PDF | 32 | 19 | 36 | 11 | 2 | 4 | 1010 | 3.1% | Online |
| CROP | November 2017 | HTML | 35 | 17 | 35 | 10 | 2 | 0 | 1000 | — | Online |
| Mainstreet | November 8, 2017 | PDF | 29 | 24 | 29 | 16 | 2 | 0 | 1500 | 2.5% | Telephone |
| Leger | October 25, 2017 | PDF | 29 | 20 | 34 | 12 | 5 | 5 | 1008 | 3.1% | Online |
| CROP | October 2017 | HTML | 42 | 13 | 31 | 11 | 2 | 11 | 1000 | 3% | Online |
| Ipsos | October 17, 2017 | HTML | 32 | 24 | 28 | 12 | 4 | 4 | 1659 | 3.3% | Online/Telephone |
| Mainstreet | October 11, 2017 | PDF | 29 | 26 | 26 | 16 | 2 | 3 | 1500 | 2.5% | Telephone |
| CROP | September 2017 | PDF | 33 | 22 | 29 | 13 | 2 | 4 | 1002 | — | Online |
| Mainstreet | September 14, 2017 | HTML | 30 | 26 | 26 | 18 | 0* | 4 | 1501 | 2.5% | Telephone |
| Leger | August 24, 2017 | PDF | 32 | 22 | 28 | 12 | 6 | 4 | 1003 | 3.1% | Online |
| Mainstreet | August 10, 2017 | HTML | 31 | 24 | 28 | 17 | 0* | 3 | 1501 | 2.5% | Telephone |
| Mainstreet | July 15, 2017 | HTML | 33 | 21 | 28 | 19 | 0* | 5 |
| CROP | June 2017 | PDF | 38 | 21 | 25 | 13 | 3 | 13 |
| Leger | June 21, 2017 | PDF | 31 | 22 | 28 | 15 | 4 | 3 |
| Mainstreet | June 15, 2017 | HTML | 33 | 22 | 27 | 18 | 0* | 6 |
| Leger | June 15, 2017 | PDF | 30 | 22 | 28 | 13 | 7 | 2 |
| CROP | May 2017 | HTML | 36 | 24 | 28 | 10 | 2 | 8 |
| Leger | May 18, 2017 | PDF | 32 | 23 | 26 | 13 | 6 | 6 |
| Mainstreet | May 12, 2017 | HTML | 31 | 24 | 32 | 14 | 0* | 1 |
| CROP | April 2017 | HTML | 37 | 24 | 26 | 9 | 4 | 11 |
| Mainstreet | April 13, 2017 | HTML | 33 | 27 | 26 | 14 | 0* | 6 |
| Mainstreet | March 30, 2017 | HTML | 39 | 26 | 23 | 12 | 0* | 13 |
| Leger | March 16, 2017 | PDF | 34 | 25 | 22 | 14 | 5 | 9 |
| Mainstreet | March 13, 2017 | HTML | 34 | 31 | 27 | 8 | 0* | 3 |
| Mainstreet | February 13, 2017 | HTML | 34 | 31 | 28 | 7 | 0* | 3 |
| Leger | January 19, 2017 | PDF | 32 | 29 | 23 | 9 | 7 | 3 |
| Mainstreet | January 16, 2017 | HTML | 35 | 32 | 26 | 7 | 0* | 3 |
| CROP | January 16, 2017 | PDF | 35 | 27 | 25 | 11 | 2 | 8 |
| Leger | December 15, 2016 | PDF | 30 | 30 | 26 | 10 | 4 | 0 |
| CROP | December 12, 2016 | PDF | 38 | 25 | 23 | 9 | 5 | 13 |
| CROP | November 21, 2016 | PDF | 36 | 24 | 26 | 11 | 3 | 10 |
| Leger | November 10, 2016 | PDF | 31 | 30 | 25 | 10 | 4 | 1 |
| CROP | October 17, 2016 | PDF | 37 | 30 | 22 | 9 | 2 | 7 |
| Leger | September 29, 2016 | PDF | 35 | 29 | 23 | 10 | 4 | 6 |
| CROP | September 19, 2016 | PDF | 37 | 27 | 26 | 9 | 1 | 10 |
| Leger | September 1, 2016 | PDF | 34 | 29 | 23 | 10 | 4 | 5 |
| CROP | August 15, 2016 | HTML | 35 | 25 | 25 | 12 | 4 | 10 |
| CROP | June 19, 2016 | HTML | 34 | 25 | 24 | 14 | 3 | 9 |
| Leger | June 8, 2016 | PDF | 32 | 30 | 24 | 10 | 4 | 2 |
| CROP | May 23, 2016 | PDF | 34 | 26 | 27 | 11 | 3 | 7 |
| Leger | May 5, 2016 | PDF | 35 | 30 | 21 | 10 | 4 | 5 |
| CROP | April 18, 2016 | HTML | 33 | 26 | 25 | 14 | 3 | 7 |
| Leger | March 22, 2016 | PDF | 33 | 30 | 22 | 10 | 6 | 3 |
| CROP | March 21, 2016 | HTML | 32 | 30 | 24 | 11 | 3 | 2 |
| CROP | February 15, 2016 | PDF | 36 | 31 | 18 | 12 | 3 | 5 |
| Leger | February 4, 2016 | PDF | 36 | 29 | 21 | 10 | 5 | 7 |
| CROP | January 18, 2016 | PDF | 35 | 27 | 19 | 16 | 3 | 8 |
| CROP | December 14, 2015 | PDF | 37 | 30 | 17 | 13 | 3 | 7 |
| Leger | November 19, 2015 | PDF | 35 | 32 | 20 | 10 | 2 | 3 |
| CROP | November 18, 2015 | PDF | 36 | 35 | 16 | 12 | 2 | 1 |
| CROP | October 18, 2015 | PDF | 36 | 33 | 16 | 12 | 3 | 3 |
| CROP | September 20, 2015 | PDF | 37 | 30 | 18 | 13 | 2 | 7 |
| CROP | August 17, 2015 | PDF | 33 | 29 | 23 | 13 | 2 | 4 |
| CROP | June 16, 2015 | HTML | 34 | 34 | 17 | 13 | 2 | 0 |
| Leger | June 11, 2015 | PDF | 36 | 32 | 20 | 10 | 2 | 4 |
| CROP | May 20, 2015 | HTML | 29 | 33 | 20 | 15 | 3 | 4 |
| Leger | May 17, 2015 | PDF | 32 | 34 | 20 | 10 | 3 | 2 |
| CROP | April 20, 2015 | PDF | 34 | 27 | 25 | 12 | 2 | 7 |
| Leger | April 9, 2015 | PDF | 37 | 28 | 21 | 10 | 4 | 9 |
| CROP | March 15, 2015 | HTML | 29 | 27 | 26 | 16 | 2 | 2 |
| CROP | February 15, 2015 | HTML | 37 | 26 | 22 | 11 | 3 | 11 |
| Leger | February 5, 2015 | PDF | 37 | 25 | 25 | 9 | 4 | 12 |
| CROP | January 19, 2015 | PDF | 35 | 26 | 23 | 13 | 4 | 9 |
| CROP | December 15, 2014 | HTML | 35 | 28 | 27 | 10 | 1 | 7 |
| Leger | December 11, 2014 | PDF | 34 | 26 | 26 | 11 | 3 | 8 |
| CROP | November 17, 2014 | HTML | 36 | 23 | 24 | 14 | 3 | 12 |
| Leger | November 13, 2014 | PDF | 36 | 26 | 26 | 10 | 2 | 10 |
| CROP | October 20, 2014 | PDF | 40 | 25 | 23 | 12 | 0 | 15 |
| Leger | September 25, 2014 | PDF | 38 | 21 | 28 | 10 | 3 | 10 |
| CROP | September 22, 2014 | PDF | 35 | 21 | 30 | 13 | 1 | 5 |
| Leger | August 25, 2014 | PDF | 41 | 22 | 23 | 10 | 4 | 18 |
| CROP | August 18, 2014 | PDF | 41 | 18 | 27 | 12 | 2 | 14 |
| Leger | June 18, 2014 | PDF | 40 | 20 | 27 | 9 | 4 | 13 |
| CROP | June 16, 2014 | PDF | 39 | 19 | 29 | 10 | 3 | 10 |
| Leger | June 5, 2014 | PDF | 39 | 20 | 29 | 9 | 3 | 10 |
| CROP | May 19, 2014 | PDF | 41 | 22 | 24 | 10 | 3 | 17 |
| Leger | May 8, 2014 | PDF | 40 | 19 | 27 | 11 | 3 | 13 |
| CROP | April 21, 2014 | PDF | 40 | 22 | 23 | 11 | 3 | 17 |
| 2014 election | April 7, 2014 | HTML | 41.52 | 25.38 | 23.05 | 7.63 | 2.42 | 16.14 |

## Mainstreet

"*" = Mainstreet does not mention "Other" nor any other party than the main four, but the total of the main four is 100%, (±1% because of sum of rounding errors). It is not known whether any other parties were allowed in the answer, or whether those answers were excluded, but it is highly unlikely that less than 0.5% of those polled by Mainstreet prefer a party other than the main four. |}