Westminster Voting Intention
| End Date | Company | Client | CON | LAB | LD | GRN | UKIP | Lead |
| 20 May 2017 | Survation Online | Mail on Sunday | 46 | 34 | 8 | 1 | 3 | +12 |
| 19 May 2017 | YouGov Online | Times | 44 | 35 | 9 | 2 | 3 | +9 |
| 18 May 2017 | ORB Online | Telegraph | 46 | 34 | 7 | 7 | +12 | |
| 17 May 2017 | Opinium Online | Observer | 46 | 33 | 8 | 2 | 5 | +13 |
| 17 May 2017 | Ipsos MORI Phone | Evening Standard | 49 | 34 | 7 | 3 | 2 | +15 |
| 17 May 2017 | YouGov Online | Times | 45 | 32 | 8 | 2 | 6 | +13 |
| 15 May 2017 | Kantar Public Online | 47 | 29 | 8 | 4 | 6 | +18 | |
| 15 May 2017 | Panelbase Online | 47 | 33 | 7 | 3 | 5 | +14 | |
| 14 May 2017 | GfK Online | Business Insider | 48 | 28 | 7 | 3 | 5 | +20 |
| 14 May 2017 | ICM Online | Guardian | 48 | 28 | 10 | 3 | 6 | +20 |
| 13 May 2017 | Survation Phone | Good Morning Britain | 48 | 30 | 8 | 2 | 4 | +18 |
| 12 May 2017 | YouGov Online | Times | 49 | 31 | 9 | 2 | 3 | +18 |
| 12 May 2017 | Opinium Online | Observer | 47 | 32 | 8 | 2 | 5 | +15 |
| 12 May 2017 | ComRes Online | Ind on Sun/Sun Mirror | 48 | 30 | 10 | 3 | 5 | +18 |
| 11 May 2017 | ORB Online | Telegraph | 46 | 32 | 8 | 7 | +14 | |
| 10 May 2017 | YouGov Online | Times | 46 | 30 | 11 | 2 | 5 | +16 |
| 09 May 2017 | Panelbase Online | 48 | 31 | 8 | 2 | 5 | +17 | |
| 08 May 2017 | Kantar Public Online | 44 | 28 | 11 | 4 | 8 | +16 | |
| 07 May 2017 | ICM Online | Guardian | 49 | 27 | 9 | 3 | 6 | +22 |
| 06 May 2017 | Survation Phone | Good Morning Britain | 47 | 30 | 7 | 3 | 5 | +17 |
| 05 May 2017 | ICM Online | Sun | 46 | 28 | 10 | 4 | 8 | +18 |
| 05 May 2017 | YouGov Online | Sunday Times | 47 | 28 | 11 | 2 | 6 | +19 |
| 04 May 2017 | ORB Online | Telegraph | 46 | 31 | 9 | 8 | +15 | |
| 03 May 2017 | Opinium Online | Observer | 46 | 30 | 9 | 2 | 7 | +16 |
| 03 May 2017 | YouGov Online | Times | 48 | 29 | 10 | 2 | 5 | +19 |
| 02 May 2017 | Kantar Public Online | 48 | 24 | 11 | 4 | 7 | +24 | |
| 02 May 2017 | Panelbase Online | 47 | 30 | 10 | 2 | 5 | +17 | |
| 02 May 2017 | ICM Online | Guardian | 47 | 28 | 8 | 4 | 8 | +19 |
| 28 Apr 2017 | ICM Online | Sun | 47 | 28 | 9 | 4 | 8 | +19 |
| 28 Apr 2017 | YouGov Online | Times | 44 | 31 | 11 | 2 | 6 | +13 |
| 28 Apr 2017 | Opinium Online | Observer | 47 | 30 | 8 | 3 | 7 | +17 |
| 27 Apr 2017 | ORB Online | Telegraph | 42 | 31 | 10 | 3 | 8 | +11 |
| 26 Apr 2017 | YouGov Online | Times | 45 | 29 | 10 | 3 | 7 | +16 |
| 25 Apr 2017 | Ipsos MORI Phone | Evening Standard | 49 | 26 | 13 | 1 | 4 | +23 |
| 24 Apr 2017 | Panelbase Online | 49 | 27 | 10 | 3 | 5 | +22 | |
| 24 Apr 2017 | Kantar Public Online | 46 | 24 | 11 | 4 | 8 | +22 | |
| 24 Apr 2017 | ICM Online | Guardian | 48 | 27 | 10 | 3 | 7 | +21 |
| 22 Apr 2017 | Survation Online | Mail on Sunday | 40 | 29 | 11 | 2 | 11 | +11 |
| 21 Apr 2017 | ICM Online | Peston on Sunday | 48 | 26 | 10 | 3 | 8 | +22 |
| 21 Apr 2017 | YouGov Online | Times | 48 | 25 | 12 | 3 | 5 | +23 |
| 20 Apr 2017 | ORB Online | Telegraph | 44 | 29 | 8 | 3 | 10 | +15 |
| 20 Apr 2017 | Opinium Online | Observer | 45 | 26 | 11 | 3 | 9 | +19 |
| 20 Apr 2017 | ComRes Online | Sun Mirror | 50 | 25 | 11 | 3 | 7 | +25 |
| 19 Apr 2017 | YouGov Online | Times | 48 | 24 | 12 | 2 | 7 | +24 |
| 18 Apr 2017 | ICM Online | Guardian | 46 | 25 | 11 | 4 | 8 | +21 |
| 16 Apr 2017 | YouGov Online | Times | 44 | 23 | 12 | 4 | 10 | +21 |
| 13 Apr 2017 | Opinium Online | Observer | 38 | 29 | 7 | 5 | 14 | +9 |
| 13 Apr 2017 | ComRes Online | Ind on Sun/Sun Mirror | 46 | 25 | 11 | 4 | 9 | +21 |
| 06 Apr 2017 | YouGov Online | Times | 42 | 25 | 11 | 3 | 11 | +17 |
| 02 Apr 2017 | ICM Online | Guardian | 43 | 25 | 11 | 4 | 11 | +18 |
| 27 Mar 2017 | YouGov Online | Times | 43 | 25 | 11 | 3 | 10 | +18 |
| 21 Mar 2017 | YouGov Online | Times | 41 | 25 | 11 | 3 | 12 | +16 |
| 19 Mar 2017 | ICM Online | Guardian | 45 | 26 | 9 | 4 | 10 | +19 |
| 17 Mar 2017 | Opinium Online | Observer | 41 | 28 | 8 | 3 | 13 | +13 |
| 17 Mar 2017 | ComRes Online | Ind on Sun/Sun Mirror | 42 | 25 | 12 | 4 | 10 | +17 |
| 15 Mar 2017 | GfK Online | 41 | 28 | 7 | 6 | 12 | +13 | |
| 14 Mar 2017 | Ipsos MORI Phone | Evening Standard | 43 | 30 | 13 | 4 | 6 | +13 |
| 14 Mar 2017 | YouGov Online | Times | 44 | 27 | 10 | 4 | 9 | +17 |
| 09 Mar 2017 | YouGov Online | Times | 44 | 25 | 10 | 3 | 11 | +19 |
| 05 Mar 2017 | ICM Online | Guardian | 44 | 28 | 8 | 5 | 11 | +16 |
| 28 Feb 2017 | YouGov Online | Times | 42 | 25 | 11 | 4 | 12 | +17 |
| 22 Feb 2017 | YouGov Online | Times | 41 | 25 | 11 | 3 | 13 | +16 |
| 19 Feb 2017 | ICM Online | Guardian | 44 | 26 | 8 | 4 | 13 | +18 |
| 16 Feb 2017 | Opinium Online | Observer | 40 | 27 | 8 | 4 | 14 | +13 |
| 14 Feb 2017 | Ipsos MORI Phone | Evening Standard | 40 | 29 | 13 | 4 | 9 | +11 |
| 13 Feb 2017 | YouGov Online | Times | 40 | 24 | 11 | 4 | 15 | +16 |
| 10 Feb 2017 | ComRes Online | Ind on Sun/Sun Mirror | 41 | 26 | 11 | 4 | 11 | +15 |
| 06 Feb 2017 | YouGov Online | Times | 40 | 24 | 11 | 4 | 14 | +16 |
| 05 Feb 2017 | ICM Online | Guardian | 42 | 27 | 10 | 4 | 12 | +15 |
| 03 Feb 2017 | Opinium Online | Observer | 37 | 30 | 8 | 5 | 14 | +7 |
| 31 Jan 2017 | YouGov Online | Times | 40 | 26 | 11 | 4 | 12 | +14 |
| 24 Jan 2017 | YouGov Online | Times | 40 | 24 | 10 | 4 | 14 | +16 |
| 22 Jan 2017 | ICM Online | Guardian | 42 | 26 | 10 | 5 | 13 | +16 |
| 18 Jan 2017 | YouGov Online | Times | 42 | 25 | 11 | 3 | 12 | +17 |
| 16 Jan 2017 | Ipsos MORI Phone | Evening Standard | 43 | 31 | 11 | 4 | 6 | +12 |
| 13 Jan 2017 | Survation Online | Mail on Sunday | 38 | 29 | 10 | 2 | 13 | +9 |
| 12 Jan 2017 | Opinium Online | Observer | 38 | 30 | 7 | 4 | 14 | +8 |
| 10 Jan 2017 | YouGov Online | Times | 39 | 28 | 11 | 3 | 13 | +11 |
| 08 Jan 2017 | ICM Online | Guardian | 42 | 28 | 9 | 4 | 12 | +14 |
| 04 Jan 2017 | YouGov Online | Times | 39 | 26 | 10 | 4 | 14 | +13 |
| 19 Dec 2016 | YouGov Online | Times | 39 | 24 | 12 | 4 | 14 | +15 |
| 16 Dec 2016 | Opinium Online | Observer | 38 | 31 | 6 | 4 | 13 | +7 |
| 12 Dec 2016 | Ipsos MORI Phone | Evening Standard | 40 | 29 | 14 | 3 | 9 | +11 |
| 11 Dec 2016 | ICM Online | Guardian | 41 | 27 | 9 | 3 | 14 | +14 |
| 05 Dec 2016 | YouGov Online | Times | 42 | 25 | 11 | 4 | 12 | +17 |
| 29 Nov 2016 | YouGov Online | Times | 39 | 27 | 9 | 4 | 14 | +12 |
| 27 Nov 2016 | ICM Online | Guardian | 44 | 28 | 7 | 4 | 12 | +16 |
| 22 Nov 2016 | YouGov Online | Times | 41 | 28 | 9 | 4 | 12 | +13 |
| 20 Nov 2016 | ICM Online | Guardian | 42 | 28 | 9 | 3 | 11 | +14 |
| 18 Nov 2016 | Opinium Online | Observer | 41 | 29 | 7 | 3 | 12 | +12 |
| 15 Nov 2016 | YouGov Online | Times | 42 | 28 | 8 | 4 | 11 | +14 |
| 14 Nov 2016 | Ipsos MORI Phone | Evening Standard | 42 | 33 | 10 | 3 | 7 | +9 |
| 04 Nov 2016 | Opinium Online | Observer | 40 | 32 | 6 | 4 | 13 | +8 |
| 01 Nov 2016 | YouGov Online | Times | 41 | 27 | 10 | 4 | 11 | +14 |
| 30 Oct 2016 | ICM Online | Guardian | 43 | 27 | 8 | 5 | 12 | +16 |
| 25 Oct 2016 | YouGov Online | Times | 40 | 27 | 11 | 3 | 11 | +13 |
| 24 Oct 2016 | BMG Online | 42 | 28 | 8 | 4 | 12 | +14 | |
| 21 Oct 2016 | Opinium Online | Observer | 39 | 30 | 6 | 4 | 13 | +9 |
| 20 Oct 2016 | YouGov Online | Election Data | 42 | 26 | 8 | 5 | 12 | +16 |
| 17 Oct 2016 | Ipsos MORI Phone | Evening Standard | 47 | 29 | 7 | 4 | 6 | +18 |