Ontario general election, 2011 Opinion polls Opinion polls

| Polling_Firm | Date_of_Polling | Link | Liberal | Green |
|---|---|---|---|---|
| Nanos Research | September 10–11, 2011 | PDF | 38.1 | 2.7 |
| Ipsos Reid | September 7–11, 2011 | HTML | 38 | 1 |
| Harris-Decima | August 25 – September 4, 2011 | HTML | 40 | 6 |
| Nanos Research | August 30 – September 1, 2011 | PDF | 31.9 | 4.1 |
| Forum Research | August 29–30, 2011 | HTML | 30 | 7 |
| Angus Reid | August 25–28, 2011 | PDF | 31 | 6 |
| Nanos Research | August 10–13, 2011 | PDF | 37.6 | 3.4 |
| Ipsos Reid | July 29 – August 4, 2011 | HTML | 36 | 3 |
| Forum Research | July 27–28, 2011 | HTML | 28 | 7 |
| Ipsos Reid | June 7 – July 7, 2011 | HTML | 31 | 5 |
| Forum Research | June 21–22, 2011 | HTML | 26 | 8 |