EU Membership: Populus
| End Date | Company | Client | IN | OUT | DK | Lead |
| 22 Jun 2016 | Populus Online | 55 | 45 | +10 | ||
| 10 Mar 2016 | Populus Online | Number Cruncher Politics | 48 | 45 | 7 | +3 |
| 06 Mar 2016 | Populus Phone | Number Cruncher Politics | 49 | 35 | 15 | +14 |
| 28 Feb 2016 | Populus Phone | Number Cruncher Politics | 48 | 37 | 15 | +11 |
| 28 Feb 2016 | Populus Online | Number Cruncher Politics | 39 | 45 | 18 | +6 |
| 12 Apr 2015 | Populus Online | FT | 40 | 39 | 17 | +1 |