WESTMINSTER POLL
Opinium – 17-19 June 2026
Fieldwork17–19 June 2026
Sample2,050
| Reform UK | 27% |
|---|---|
| Labour | 20% |
| Conservative | 18% |
| Green | 14% |
| 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.
Reform UK led this Opinium Westminster voting-intention poll on 27%, followed by Labour on 20% and the Conservatives on 18%.
Change since the previous Opinium poll
Compared with Opinium's previous poll (3–5 June 2026):
| Party | Previous | This poll | Change |
|---|---|---|---|
| Reform UK | 29% | 27% | −2 |
| Labour | 20% | 20% | – |
| Conservative | 17% | 18% | +1 |
| Green | 14% | 14% | – |
| 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