London mayoral election, 2012 Opinion polls Opinion polls

| Dates_conducted | Polling_organisation_client | Conservatives | Labour | Liberal_Democrats | Others_ |
|---|---|---|---|---|---|
| 23–25 April 2012 | ComRes/Evening Standard | 45% | 36% | 5% | 13% |
| 23–25 April 2012 | ComRes/Evening Standard | 54% | 46% | – | – |
| 20–22 April 2012 | YouGov/Evening Standard | 43% | 41% | 8% | 9% |
| 20–22 April 2012 | YouGov/Evening Standard | 51% | 49% | – | – |
| 19 April 2012 | TNS-BMRB | 45% | 35% | 11% | 9% |
| 13–15 April 2012 | YouGov/Evening Standard | 45% | 40% | 7% | 8% |
| 13–15 April 2012 | YouGov/Evening Standard | 53% | 47% | – | – |
| 2–5 April 2012 | ComRes | 47% | 40% | 6% | 7% |
| 2–5 April 2012 | ComRes | 53% | 47% | – | – |
| 12–15 March 2012 | YouGov | 49% | 41% | 5% | 4% |
| 12–15 March 2012 | YouGov | 54% | 46% | – | – |