Senedd Polling
Polling Trends
All values use a 7-point moving average where available.
As of 13 February 2026, the PollCheck 5-poll moving average shows Plaid Cymru leading on 29.8%, ahead of Reform UK on 28.6% and Labour on 13.8%. The Conservatives on 11.8% and Greens on 8.6%.
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Recent Polls
Tap a poll to see the full breakdown and how it compares with the previous survey from the same pollster.
Recent Senedd Polls
| Date | Pollster | Sample | MOE | Labour | Conservative | Plaid Cymru | Green | Lib Dems | Reform UK | Others |
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Frequently Asked Questions
What is the Senedd (Welsh Parliament)?
The Senedd, formerly the National Assembly for Wales, is the devolved legislature of Wales. In 2026, the Senedd is expanding from 60 to 96 Members of the Senedd (MSs) and moving to a fully proportional representation (PR) system, replacing the previous Additional Member System (AMS). This is a major electoral reform that will significantly change Welsh politics.
How does Senedd polling differ from Westminster polling?
Senedd polling measures voting intentions for Welsh Parliament elections, which can differ from Westminster voting intentions. Welsh voters may vote differently in devolved elections. From 2026, the Senedd uses a fully proportional representation system with 96 MSs, meaning seat projections work very differently than Westminster's first-past-the-post system.
What is the new proportional representation system in Wales?
In 2026, the Senedd is moving from the Additional Member System (AMS) to a fully proportional representation system with 96 MSs. This is a major electoral reform that will significantly change how seats are allocated, ensuring much more proportional outcomes based on vote share across Wales. The expansion from 60 to 96 seats and the move to full PR represents the biggest change to Welsh electoral politics since devolution.
How often are Senedd polls released?
Senedd polls are released less frequently than Westminster polls, typically monthly or quarterly unless an election is approaching. PollCheck updates Senedd polling data as new polls are published by major pollsters like YouGov, ITV Wales, and others.
Which parties compete in Senedd elections?
Major parties include Welsh Labour, Plaid Cymru, Welsh Conservatives, Welsh Liberal Democrats, Welsh Greens, Reform UK, and Abolish the Welsh Assembly Party. Polling shows support levels for each party in Senedd elections, with Plaid Cymru and Labour typically being the largest parties.