| Great Britain | Northern Ireland | Wales | Scotland |
| 2017 | 2018 | 2019 | 2020 |
| Pollster | Fieldwork | Tables | CON | LAB | LDEM | SNP | GRN | PC |
|---|---|---|---|---|---|---|---|---|
| Redfield and Wilton Strategies | 2020-05-27 | 43 | 37 | 9 | 5 | 3 | 0 | |
| Survation | 2020-05-26 | 46 | 33 | 8 | 5 | 4 | 0 | |
| Yougov | 2020-05-26 | 44 | 38 | 6 | 5 | 4 | 1 | |
| Opinium | 2020-05-22 | 47 | 35 | 6 | 5 | 3 | 0 | |
| Yougov | 2020-05-19 | 48 | 33 | 6 | 5 | 5 | 1 | |
| ComRes | 2020-05-17 | 46 | 33 | 7 | 4 | 4 | 0 | |
| Opinium | 2020-05-15 | 49 | 34 | 6 | 5 | 3 | 1 | |
| Redfield and Wilton Strategies | 2020-05-15 | 47 | 35 | 9 | 4 | 3 | 0 | |
| Kantar | 2020-05-11 | 51 | 32 | 7 | 5 | 2 | 1 | |
| Opinium | 2020-05-07 | 49 | 33 | 6 | 5 | 5 | 1 | |
| Redfield and Wilton Strategies | 2020-05-06 | 50 | 31 | 7 | 4 | 5 | 0 | |
| Yougov | 2020-05-06 | 50 | 30 | 7 | 4 | 5 | 1 | |
| Opinium | 2020-05-01 | 51 | 33 | 6 | 5 | 3 | 1 | |
| Survation | 2020-04-28 | 48 | 31 | 8 | 4 | 5 | 1 | |
| Redfield and Wilton Strategies | 2020-04-26 | 50 | 33 | 7 | 5 | 4 | 0 | |
| Opinium | 2020-04-23 | 50 | 33 | 7 | 5 | 3 | 0 | |
| Opinium | 2020-04-17 | 51 | 32 | 6 | 5 | 3 | 0 | |
| Redfield and Wilton Strategies | 2020-04-17 | 52 | 31 | 8 | 4 | 3 | 1 | |
| Yougov | 2020-04-17 | 53 | 32 | 5 | 4 | 3 | 1 | |
| Opinium | 2020-04-07 | 55 | 29 | 5 | 5 | 4 | 0 | |
| Opinium | 2020-04-03 | 53 | 30 | 7 | 5 | 3 | 1 | |
| Yougov | 2020-04-02 | 52 | 28 | 8 | 5 | 5 | 1 | |
| Opinium | 2020-03-27 | 54 | 28 | 6 | 5 | 3 | 1 | |
| Number Cruncher Politics | 2020-03-26 | 54 | 28 | 7 | 4 | 4 | 0 | |
| Ipsos Mori | 2020-03-16 | 52 | 30 | 9 | 4 | 4 | 1 | |
| Opinium | 2020-03-13 | 49 | 32 | 6 | 5 | 5 | 1 | |
| Kantar | 2020-03-09 | 50 | 29 | 11 | 4 | 2 | 1 | |
| ComRes | 2020-02-20 | 47 | 31 | 9 | 4 | 4 | 1 | |
| Opinium | 2020-02-14 | 47 | 31 | 7 | 6 | 4 | 1 | |
| Yougov | 2020-02-10 | 48 | 28 | 10 | 4 | 6 | 1 | |
| Ipsos Mori | 2020-02-03 | 47 | 30 | 11 | 4 | 5 | 1 | |
| Yougov | 2020-02-02 | 49 | 30 | 8 | 4 | 5 | 1 | |
| Survation | 2020-01-31 | 44 | 33 | 10 | 5 | 3 | 0 | |
| Yougov | 2020-01-26 | 49 | 29 | 10 | 5 | 4 | 1 | |
| Opinium | 2020-01-17 | 47 | 30 | 9 | 5 | 4 | 1 | |
| BMG Research | 2020-01-10 | 44 | 29 | 11 | 3 | 5 | 0 |