EU Referendum Question: Should the United Kingdom remain a member of the European Union or leave the European Union?
| Last Day of Field Work | Pollster / Client | Sample Size | Weight | Remain | Leave | Unsure | Lead |
|---|---|---|---|---|---|---|---|
| 22 Jun 2016 | Populus | - | - | 55 | 45 | 0 | 10 |
| 22 Jun 2016 | ComRes | - | - | 54 | 46 | 0 | 8 |
| 22 Jun 2016 | ComRes | - | - | 48 | 42 | 10 | 6 |
| 22 Jun 2016 | YouGov | - | - | 45 | 45 | 8 | Tie |
| 22 Jun 2016 | Ipsos MORI | - | - | 49 | 46 | 1 | 3 |
| 22 Jun 2016 | TNS | - | - | 41 | 43 | 16 | 2 |
| 22 Jun 2016 | Opinium | - | - | 44 | 45 | 9 | 1 |
| 20 Jun 2016 | Survation | - | - | 45 | 44 | 11 | 1 |
| 19 Jun 2016 | ORB | - | - | 53 | 46 | 2 | 7 |
| 19 Jun 2016 | YouGov | - | - | 49 | 51 | 0 | 2 |
| 18 Jun 2016 | Survation | - | - | 45 | 42 | 13 | 3 |
| 17 Jun 2016 | YouGov | - | - | 44 | 43 | 9 | 1 |
| 17 Jun 2016 | Opinium | - | - | 44 | 44 | 12 | Tie |
| 16 Jun 2016 | YouGov | - | - | 42 | 44 | 9 | 2 |
| 15 Jun 2016 | Survation | - | - | 42 | 45 | 13 | 3 |
| 15 Jun 2016 | BMG Research | - | - | 53 | 47 | 0 | 6 |
| 15 Jun 2016 | BMG Research | - | - | 45 | 55 | 0 | 10 |
| 14 Jun 2016 | ComRes | - | - | 46 | 45 | 9 | 1 |
| 13 Jun 2016 | ComRes | - | - | 46 | 45 | 9 | 1 |
| 13 Jun 2016 | TNS | - | - | 40 | 47 | 13 | 7 |
| 13 Jun 2016 | YouGov | - | - | 39 | 46 | 15 | 7 |
| 13 Jun 2016 | ICM | - | - | 44 | 49 | 7 | 5 |
| 13 Jun 2016 | ICM | - | - | 45 | 50 | 5 | 5 |
| 12 Jun 2016 | ORB | - | - | 48 | 49 | 3 | 1 |
| 10 Jun 2016 | YouGov | - | - | 42 | 43 | 11 | 1 |
| 10 Jun 2016 | Opinium | - | - | 44 | 42 | 13 | 2 |
| 9 Jun 2016 | ORB | - | - | 45 | 55 | 0 | 10 |
| 6 Jun 2016 | YouGov | - | - | 43 | 42 | 11 | 1 |
| 5 Jun 2016 | ICM | - | - | 43 | 48 | 9 | 5 |
| 5 Jun 2016 | ORB | - | - | 52 | 40 | 7 | 12 |
| 3 Jun 2016 | Opinium | - | - | 43 | 41 | 16 | 2 |
| 3 Jun 2016 | Opinium | - | - | 40 | 43 | 16 | 3 |
| 31 May 2016 | YouGov | - | - | 41 | 41 | 13 | Tie |
| 29 May 2016 | ICM | - | - | 42 | 45 | 15 | 3 |
| 29 May 2016 | ICM | - | - | 44 | 47 | 9 | 3 |
| 29 May 2016 | ORB | - | - | 51 | 46 | 3 | 5 |
| 25 May 2016 | BMG Research | - | - | 44 | 45 | 12 | 1 |
| 24 May 2016 | Survation | - | - | 44 | 38 | 18 | 6 |
| 24 May 2016 | YouGov | - | - | 41 | 41 | 13 | Tie |
| 22 May 2016 | ICM | - | - | 45 | 45 | 10 | Tie |
| 22 May 2016 | ORB | - | - | 55 | 42 | 3 | 13 |
| 19 May 2016 | Opinium | - | - | 44 | 40 | 14 | 4 |
| 17 May 2016 | YouGov | - | - | 44 | 40 | 12 | 4 |
| 17 May 2016 | ComRes | - | - | 52 | 41 | 7 | 11 |
| 16 May 2016 | Ipsos MORI | - | - | 55 | 37 | 5 | 18 |
| 15 May 2016 | ICM | - | - | 47 | 39 | 14 | 8 |
| 15 May 2016 | ICM | - | - | 43 | 47 | 10 | 4 |
| 15 May 2016 | ORB | - | - | 55 | 40 | 5 | 15 |
| 12 May 2016 | TNS | - | - | 38 | 41 | 21 | 3 |
| 8 May 2016 | ICM | - | - | 44 | 46 | 11 | 2 |