WESTMINSTER POLL
Opinium – 29-31 July 2026
Fieldwork29–31 July 2026
Sample2,050
| Labour | 27% |
|---|---|
| Reform UK | 23% |
| Conservative | 17% |
| Green | 12% |
| Liberal Democrats | 12% |
| Other | 5% |
| SNP | 3% |
| Plaid Cymru | 1% |
Party figures are shown where available in our records, including SNP and Plaid Cymru. A missing entry does not mean zero. Other follows the pollster's published grouping.
Labour led this Opinium Westminster voting-intention poll on 27%, followed by Reform UK on 23% and the Conservatives on 17%.
Change since the previous Opinium poll
Compared with Opinium's previous poll (15–17 July 2026):
| Party | Previous | This poll | Change |
|---|---|---|---|
| Labour | 22% | 27% | +5 |
| Reform UK | 23% | 23% | – |
| Conservative | 20% | 17% | −3 |
| Green | 14% | 12% | −2 |
| Liberal Democrats | 11% | 12% | +1 |
| Other | 5% | 5% | – |
| SNP | 3% | 3% | – |
| Plaid Cymru | 1% | 1% | – |
Changes are in percentage points. Small movements between polls may reflect sampling variation rather than a sustained change in support.
Other recent Opinium polls
For a wider comparison across pollsters, see the UK Decides Poll of Polls.
Source: Original poll publication