WESTMINSTER POLL
Deltapoll – 11-14 September 2026
Fieldwork11–14 September 2026
Sample2,056
| Labour | 29% |
|---|---|
| Reform UK | 25% |
| Conservative | 19% |
| Green | 9% |
| Liberal Democrats | 8% |
| Other | 4% |
| SNP | 4% |
| 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 Deltapoll Westminster voting-intention poll on 29%, followed by Reform UK on 25% and the Conservatives on 19%.
Change since the previous Deltapoll poll
Compared with Deltapoll's previous poll (21–24 August 2026):
| Party | Previous | This poll | Change |
|---|---|---|---|
| Labour | 30% | 29% | −1 |
| Reform UK | 27% | 25% | −2 |
| Conservative | 20% | 19% | −1 |
| Green | 8% | 9% | +1 |
| Liberal Democrats | 8% | 8% | – |
| Other | 3% | 4% | +1 |
| SNP | 3% | 4% | +1 |
| 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 Deltapoll polls
For a wider comparison across pollsters, see the UK Decides Poll of Polls.
Source: Original poll publication