Best Prime Minister
| End Date | Company | Client | CON | LAB | OTH | DK | Lead |
| 19 Aug 2020 | YouGov Online | 31 | 35 | 31 | +4 | ||
| 19 Aug 2020 | Redfield & Wilton Online | 41 | 35 | 24 | +6 | ||
| 16 Aug 2020 | Savanta ComRes Online | 43 | 30 | 27 | +13 | ||
| 14 Aug 2020 | Opinium Online | 34 | 33 | 19 | 14 | +1 | |
| 12 Aug 2020 | YouGov Online | 32 | 32 | 32 | Tie | ||
| 12 Aug 2020 | Redfield & Wilton Online | 47 | 33 | 20 | +14 | ||
| 05 Aug 2020 | YouGov Online | 32 | 34 | 31 | +2 | ||
| 03 Aug 2020 | Survation Online | 42 | 35 | 23 | +7 | ||
| 31 Jul 2020 | Opinium Online | 35 | 34 | 17 | 14 | +1 | |
| 29 Jul 2020 | Redfield & Wilton Online | 48 | 32 | 20 | +16 | ||
| 24 Jul 2020 | Opinium Online | 35 | 33 | 16 | 16 | +2 | |
| 22 Jul 2020 | Redfield & Wilton Online | 45 | 33 | 22 | +12 | ||
| 19 Jul 2020 | Savanta ComRes Online | 40 | 31 | 29 | +9 | ||
| 17 Jul 2020 | Opinium Online | 36 | 34 | 17 | 14 | +2 | |
| 15 Jul 2020 | Redfield & Wilton Online | 48 | 33 | 19 | +15 | ||
| 12 Jul 2020 | Survation Online | 43 | 33 | 22 | +10 | ||
| 10 Jul 2020 | Opinium Online | 36 | 33 | 15 | 16 | +3 | |
| 08 Jul 2020 | Redfield & Wilton Online | 46 | 35 | 18 | +11 | ||
| 06 Jul 2020 | Survation Online | 41 | 37 | 22 | +4 | ||
| 03 Jul 2020 | Opinium Online | 34 | 33 | 18 | 15 | +1 | |
| 01 Jul 2020 | Redfield & Wilton Online | 49 | 33 | 18 | +16 | ||
| 26 Jun 2020 | Opinium Online | 35 | 37 | 14 | 14 | +2 | |
| 25 Jun 2020 | Survation Online | 46 | 30 | 24 | +16 | ||
| 25 Jun 2020 | Redfield & Wilton Online | 50 | 31 | 19 | +19 | ||
| 19 Jun 2020 | Opinium Online | 35 | 34 | 16 | 15 | +1 | |
| 18 Jun 2020 | Redfield & Wilton Online | 43 | 31 | 26 | +12 | ||
| 14 Jun 2020 | Savanta ComRes Online | 46 | 26 | 28 | +18 | ||
| 12 Jun 2020 | YouGov Online | 33 | 33 | 31 | Tie | ||
| 12 Jun 2020 | Opinium Online | 36 | 35 | 15 | 13 | +1 | |
| 10 Jun 2020 | Survation Online | 43 | 33 | 24 | +10 | ||
| 10 Jun 2020 | Ipsos MORI Online | 43 | 38 | 19 | +5 | ||
| 05 Jun 2020 | Opinium Online | 36 | 35 | 16 | 13 | +1 | |
| 03 Jun 2020 | Survation Online | 44 | 35 | 21 | +9 | ||
| 30 May 2020 | YouGov Online | 37 | 32 | 28 | +5 | ||
| 29 May 2020 | Opinium Online | 36 | 33 | 17 | 14 | +3 | |
| 26 May 2020 | Survation Online | 48 | 31 | 21 | +17 | ||
| 22 May 2020 | Opinium Online | 39 | 31 | 14 | 16 | +8 | |
| 19 May 2020 | YouGov Online | 39 | 27 | 29 | +10 | ||
| 14 May 2020 | Opinium Online | 42 | 28 | 15 | 15 | +14 | |
| 07 May 2020 | Opinium Online | 44 | 23 | 16 | 17 | +21 | |
| 01 May 2020 | Opinium Online | 45 | 23 | 15 | 16 | +22 | |
| 23 Apr 2020 | Opinium Online | 44 | 23 | 17 | 16 | +21 | |
| 17 Apr 2020 | YouGov Online | 46 | 22 | 28 | +18 | ||
| 17 Apr 2020 | Opinium Online | 48 | 22 | 14 | 16 | +26 | |
| 12 Nov 2019 | YouGov Online | Times | 44 | 22 | 34 | +10 | |
| 11 Nov 2019 | Kantar Public Online | 33 | 19 | 37 | 11 | +4 | |
| 01 Nov 2019 | Opinium Online | Observer | 37 | 18 | 35 | 10 | +2 |
| 25 Oct 2019 | Opinium Online | Observer | 39 | 16 | 35 | 10 | +4 |
| 21 Oct 2019 | YouGov Online | Times | 43 | 20 | 34 | +9 | |
| 17 Oct 2019 | Opinium Online | Observer | 36 | 15 | 37 | 11 | +1 |
| 15 Oct 2019 | YouGov Online | Times | 43 | 21 | 32 | +11 | |
| 09 Oct 2019 | YouGov Online | Times | 41 | 21 | 34 | +7 | |
| 04 Oct 2019 | Opinium Online | Observer | 36 | 16 | 36 | 12 | Tie |
| 01 Oct 2019 | YouGov Online | Times | 40 | 22 | 35 | +5 | |
| 27 Sep 2019 | Opinium Online | Observer | 37 | 16 | 40 | 7 | +3 |
| 20 Sep 2019 | Opinium Online | Observer | 36 | 15 | +21 | ||
| 18 Sep 2019 | YouGov Online | Times | 38 | 22 | 36 | +2 | |
| 13 Sep 2019 | Opinium Online | Observer | 35 | 16 | 37 | 12 | +2 |
| 04 Sep 2019 | Hanbury Strategy Online | 45 | 26 | 29 | +16 | ||
| 28 Aug 2019 | YouGov Online | Times | 40 | 20 | 36 | +4 | |
| 23 Aug 2019 | Opinium Online | Observer | 41 | 17 | 34 | 8 | +7 |
| 09 Aug 2019 | Opinium Online | Observer | 38 | 19 | 34 | 9 | +4 |
| 06 Aug 2019 | YouGov Online | Times | 39 | 19 | 37 | +2 | |
| 30 Jul 2019 | YouGov Online | Times | 42 | 21 | 34 | +8 | |
| 30 Jul 2019 | Ipsos MORI Online | 52 | 27 | 15 | 6 | +25 | |
| 27 Jul 2019 | Deltapoll Online | 48 | 25 | 28 | +20 | ||
| 25 Jul 2019 | Savanta ComRes Online | 49 | 28 | 24 | +21 | ||
| 24 Jul 2019 | YouGov Online | Times | 38 | 20 | 38 | 3 | Tie |
| 22 Jul 2019 | YouGov Online | Times | 34 | 20 | 42 | 4 | +8 |
| 03 Apr 2019 | YouGov Online | 29 | 20 | 47 | +18 | ||
| 29 Mar 2019 | Opinium Online | Observer | 25 | 18 | 47 | 10 | +22 |
| 25 Mar 2019 | YouGov Online | Times | 31 | 19 | 46 | +15 | |
| 22 Mar 2019 | Opinium Online | Observer | 27 | 18 | 44 | 11 | +17 |
| 18 Mar 2019 | Survation Online | Daily Mail | 48 | 29 | 22 | +19 | |
| 15 Mar 2019 | Opinium Online | Observer | 29 | 18 | 45 | 8 | +16 |
| 01 Mar 2019 | Opinium Online | Observer | 33 | 18 | 42 | 7 | +9 |
| 23 Feb 2019 | YouGov Online | Times | 39 | 16 | 42 | +3 | |
| 22 Feb 2019 | Opinium Online | Observer | 34 | 20 | 38 | 8 | +4 |
| 15 Feb 2019 | Opinium Online | Observer | 30 | 22 | 39 | 9 | +9 |
| 08 Feb 2019 | BMG Online | 29 | 22 | 40 | 9 | +11 | |
| 04 Feb 2019 | YouGov Online | Times | 40 | 19 | 39 | +1 | |
| 01 Feb 2019 | Opinium Online | Observer | 32 | 20 | 39 | 9 | +7 |
| 18 Jan 2019 | Opinium Online | Observer | 29 | 22 | 40 | 9 | +11 |
| 14 Jan 2019 | YouGov Online | Times | 36 | 20 | 41 | +5 | |
| 07 Jan 2019 | YouGov Online | Times | 38 | 20 | 38 | Tie | |
| 01 Oct 2018 | YouGov Online | Times | 34 | 23 | 39 | +5 | |
| 20 Sep 2018 | Opinium Online | 33 | 23 | 36 | 9 | +3 | |
| 19 Sep 2018 | YouGov Online | Times | 36 | 23 | 39 | +3 | |
| 13 Sep 2018 | YouGov Online | Times | 36 | 23 | 39 | +3 | |
| 13 Sep 2018 | Opinium Online | 32 | 23 | 35 | 10 | +3 | |
| 04 Sep 2018 | YouGov Online | Times | 34 | 25 | 38 | +4 | |
| 29 Aug 2018 | YouGov Online | Times | 35 | 23 | 39 | +4 | |
| 21 Aug 2018 | YouGov Online | Times | 36 | 23 | 42 | +6 | |
| 17 Aug 2018 | Opinium Online | Observer | 30 | 24 | 46 | +16 | |
| 14 Aug 2018 | YouGov Online | 35 | 24 | 41 | +6 | ||
| 10 Aug 2018 | BMG Online | 29 | 29 | 42 | +13 | ||
| 09 Aug 2018 | YouGov Online | Times | 36 | 22 | 39 | +3 | |
| 31 Jul 2018 | YouGov Online | Times | 32 | 25 | 40 | +8 | |
| 23 Jul 2018 | YouGov Online | Times | 32 | 26 | 39 | +7 | |
| 17 Jul 2018 | YouGov Online | Times | 33 | 25 | 38 | +5 |