Best Prime Minister
| End Date | Company | Client | CON | LAB | OTH | DK | Lead |
| 10 May 2021 | Redfield & Wilton Online | 50 | 26 | 25 | +24 | ||
| 03 May 2021 | Redfield & Wilton Online | 45 | 30 | 25 | +15 | ||
| 30 Apr 2021 | Opinium Online | 32 | 29 | 24 | 14 | +3 | |
| 29 Apr 2021 | Survation Online | 41 | 33 | 26 | +8 | ||
| 26 Apr 2021 | BMG Online | 40 | 24 | 11 | 24 | +16 | |
| 26 Apr 2021 | Redfield & Wilton Online | 46 | 29 | 25 | +17 | ||
| 23 Apr 2021 | Opinium Online | 35 | 25 | 26 | 14 | +9 | |
| 19 Apr 2021 | Survation Online | 43 | 34 | 23 | +9 | ||
| 19 Apr 2021 | Redfield & Wilton Online | 47 | 28 | 26 | +19 | ||
| 18 Apr 2021 | Savanta ComRes Online | 44 | 30 | 26 | +14 | ||
| 14 Apr 2021 | YouGov Online | 34 | 26 | 36 | +2 | ||
| 12 Apr 2021 | Redfield & Wilton Online | 47 | 28 | 25 | +19 | ||
| 10 Apr 2021 | Survation Online | 46 | 32 | 22 | +14 | ||
| 09 Apr 2021 | Opinium Online | 38 | 25 | 22 | 15 | +13 | |
| 08 Apr 2021 | YouGov Online | 35 | 29 | 32 | +3 | ||
| 05 Apr 2021 | Redfield & Wilton Online | 48 | 28 | 25 | +20 | ||
| 01 Apr 2021 | YouGov Online | 35 | 29 | 33 | +2 | ||
| 29 Mar 2021 | Redfield & Wilton Online | 47 | 28 | 25 | +19 | ||
| 26 Mar 2021 | Opinium Online | 33 | 27 | 25 | 15 | +6 | |
| 26 Mar 2021 | YouGov Online | 37 | 27 | 34 | +3 | ||
| 22 Mar 2021 | Redfield & Wilton Online | 50 | 26 | 23 | +24 | ||
| 19 Mar 2021 | YouGov Online | 35 | 29 | 33 | +2 | ||
| 19 Mar 2021 | BMG Online | 35 | 28 | 24 | 13 | +7 | |
| 15 Mar 2021 | Redfield & Wilton Online | 48 | 28 | 24 | +20 | ||
| 14 Mar 2021 | Savanta ComRes Online | 44 | 27 | 29 | +15 | ||
| 12 Mar 2021 | Opinium Online | 37 | 25 | 23 | 15 | +12 | |
| 12 Mar 2021 | Ipsos MORI Online | 47 | 37 | 16 | +10 | ||
| 10 Mar 2021 | Survation Online | 45 | 31 | 24 | +14 | ||
| 10 Mar 2021 | YouGov Online | 34 | 29 | 35 | +1 | ||
| 08 Mar 2021 | Redfield & Wilton Online | 50 | 27 | 23 | +23 | ||
| 04 Mar 2021 | YouGov Online | 36 | 28 | 33 | +3 | ||
| 01 Mar 2021 | Redfield & Wilton Online | 48 | 30 | 22 | +18 | ||
| 26 Feb 2021 | YouGov Online | 35 | 31 | 34 | +1 | ||
| 26 Feb 2021 | Opinium Online | 33 | 25 | 27 | 15 | +6 | |
| 25 Feb 2021 | Survation Online | 43 | 32 | 24 | +11 | ||
| 22 Feb 2021 | Redfield & Wilton Online | 47 | 33 | 20 | +14 | ||
| 18 Feb 2021 | YouGov Online | 34 | 30 | 32 | +2 | ||
| 15 Feb 2021 | Redfield & Wilton Online | 43 | 32 | 25 | +11 | ||
| 14 Feb 2021 | Savanta ComRes Online | 43 | 27 | 30 | +13 | ||
| 12 Feb 2021 | Opinium Online | 32 | 27 | 25 | +5 | ||
| 10 Feb 2021 | YouGov Online | 33 | 31 | 34 | +1 | ||
| 08 Feb 2021 | Redfield & Wilton Online | 45 | 32 | 23 | +13 | ||
| 06 Feb 2021 | Survation Online | 40 | 34 | 26 | +6 | ||
| 03 Feb 2021 | YouGov Online | 33 | 33 | 30 | Tie | ||
| 01 Feb 2021 | Redfield & Wilton Online | 42 | 32 | 26 | +10 | ||
| 29 Jan 2021 | Opinium Online | 33 | 29 | 25 | 13 | +4 | |
| 27 Jan 2021 | YouGov Online | 29 | 34 | 34 | Tie | ||
| 25 Jan 2021 | Redfield & Wilton Online | 43 | 31 | 26 | +12 | ||
| 22 Jan 2021 | YouGov Online | 31 | 33 | 32 | +1 | ||
| 18 Jan 2021 | Redfield & Wilton Online | 42 | 34 | 25 | +8 | ||
| 17 Jan 2021 | Savanta ComRes Online | 38 | 31 | 32 | +6 | ||
| 15 Jan 2021 | Opinium Online | 29 | 32 | 25 | 14 | +3 | |
| 14 Jan 2021 | YouGov Online | 29 | 34 | 34 | Tie | ||
| 13 Jan 2021 | Survation Online | 39 | 37 | 25 | +2 | ||
| 11 Jan 2021 | Redfield & Wilton Online | 40 | 34 | 26 | +6 | ||
| 07 Jan 2021 | Opinium Online | 32 | 32 | 23 | 13 | Tie | |
| 05 Jan 2021 | YouGov Online | 30 | 35 | 32 | +3 | ||
| 17 Dec 2020 | Opinium Online | 33 | 31 | 22 | 13 | +2 | |
| 16 Dec 2020 | YouGov Online | 30 | 35 | 33 | +2 | ||
| 13 Dec 2020 | Savanta ComRes Online | 39 | 31 | 30 | +8 | ||
| 08 Dec 2020 | Opinium Online | 32 | 30 | 23 | 15 | +2 | |
| 07 Dec 2020 | Survation Online | 39 | 36 | 25 | +3 | ||
| 04 Dec 2020 | Opinium Online | 32 | 30 | 24 | 14 | +2 | |
| 03 Dec 2020 | YouGov Online | 29 | 33 | 35 | +2 | ||
| 02 Dec 2020 | Redfield & Wilton Online | 43 | 32 | 26 | +11 | ||
| 27 Nov 2020 | YouGov Online | 29 | 34 | 35 | +1 | ||
| 20 Nov 2020 | Opinium Online | 31 | 30 | 23 | 15 | +1 | |
| 19 Nov 2020 | Redfield & Wilton Online | 39 | 34 | 26 | +5 | ||
| 18 Nov 2020 | YouGov Online | 29 | 34 | 34 | Tie | ||
| 15 Nov 2020 | Savanta ComRes Online | 41 | 31 | 28 | +10 | ||
| 12 Nov 2020 | YouGov Online | 28 | 34 | 36 | +2 | ||
| 11 Nov 2020 | Redfield & Wilton Online | 40 | 36 | 24 | +4 | ||
| 06 Nov 2020 | Survation Online | 40 | 33 | 27 | +7 | ||
| 06 Nov 2020 | Opinium Online | 31 | 33 | 23 | 13 | +2 | |
| 05 Nov 2020 | YouGov Online | 26 | 36 | 36 | Tie | ||
| 28 Oct 2020 | Redfield & Wilton Online | 39 | 34 | 27 | +5 | ||
| 23 Oct 2020 | Opinium Online | 30 | 31 | 22 | 16 | +1 | |
| 22 Oct 2020 | YouGov Online | 29 | 35 | 33 | +2 | ||
| 21 Oct 2020 | Redfield & Wilton Online | 39 | 34 | 26 | +5 | ||
| 18 Oct 2020 | Savanta ComRes Online | 40 | 31 | 29 | +9 | ||
| 15 Oct 2020 | YouGov Online | 29 | 35 | 33 | +2 | ||
| 09 Oct 2020 | Opinium Online | 32 | 33 | 21 | 14 | +1 | |
| 07 Oct 2020 | YouGov Online | 29 | 33 | 35 | +2 | ||
| 07 Oct 2020 | Redfield & Wilton Online | 42 | 35 | 23 | +7 | ||
| 06 Oct 2020 | Survation Online | 37 | 38 | 25 | +1 | ||
| 01 Oct 2020 | Redfield & Wilton Online | 41 | 36 | 23 | +5 | ||
| 30 Sep 2020 | YouGov Online | 27 | 36 | 35 | +1 | ||
| 25 Sep 2020 | Opinium Online | 32 | 36 | 17 | 15 | +4 | |
| 24 Sep 2020 | YouGov Online | 30 | 37 | 30 | +7 | ||
| 23 Sep 2020 | Redfield & Wilton Online | 42 | 36 | 22 | +6 | ||
| 20 Sep 2020 | Savanta ComRes Online | 41 | 35 | 24 | +6 | ||
| 17 Sep 2020 | YouGov Online | 30 | 35 | 31 | +4 | ||
| 16 Sep 2020 | Redfield & Wilton Online | 43 | 35 | 22 | +8 | ||
| 16 Sep 2020 | Survation Online | 39 | 39 | 23 | Tie | ||
| 11 Sep 2020 | Opinium Online | 33 | 32 | 21 | 14 | +1 | |
| 04 Sep 2020 | YouGov Online | 31 | 34 | 31 | +3 | ||
| 04 Sep 2020 | Survation Online | 41 | 36 | 23 | +5 | ||
| 28 Aug 2020 | Opinium Online | 34 | 32 | 18 | 16 | +2 | |
| 25 Aug 2020 | YouGov Online | 30 | 33 | 34 | +1 | ||
| 24 Aug 2020 | Redfield & Wilton Online | 42 | 33 | 25 | +9 |