Plaid Cymru — Party of Wales
Plaid Cymru Polling Trend in Wales
▬ Holding steady at 12%| Election | Plaid % | Seats | Key Context |
|---|---|---|---|
| 2019 General Election (Wales) | 9.9% | 4 | Boris Johnson wave; Plaid held ground in Welsh-speaking heartlands |
| 2021 Senedd Election | 20.3% | 13 | Best Senedd result; Cooperative Agreement reached with Labour Welsh Government |
| 2024 General Election (Wales) | 14.8% | 4 | Held 4 seats; Reform UK surge visible in Welsh valleys constituency results |
| 2025 (Wales polls) | 13% | — | Senedd polling stable; party positions for 2026 expanded Senedd |
| May 2026 (Senedd polls) | 12% | — | Reform UK at 18% in Wales; new 96-seat PR system changes the seat calculus |
Senedd 2026: A New System, New Stakes
PR System Benefits Plaid
Under the new closed-list PR system, 12% of the vote should translate to roughly 11–13 Senedd seats out of 96 — maintaining meaningful presence and leverage. In the 2021 election, Plaid 20% on the regional list produced 13 seats out of 60. With 12% under a cleaner PR system, Plaid is projected to win 10–13 seats in 2026.
Reform UK Threat in Welsh Labour Wales
Reform UK polls at 18% in Wales — a region of post-industrial communities that voted heavily for Brexit in 2016. The Reform surge is predominantly in former Labour strongholds in the South Wales Valleys and North Wales, not in Plaid Welsh-speaking western heartlands. However, it makes Welsh Government arithmetic more complex for any post-election cooperation involving Plaid.
Leadership: Adam Price and Rhun ap Iorwerth
Adam Price (2018–2023)
Adam Price led Plaid through ambitious policy development including the 2021 Cooperative Agreement with the Welsh Labour Government. Price pushed Welsh independence as an explicit priority and oversaw the party best Senedd result (20.3% in 2021). He resigned in 2023 following an independent review that found a culture of misogyny and bullying within the party.
Rhun ap Iorwerth (2023–present)
Rhun ap Iorwerth, a former Welsh-language broadcaster and long-serving MS for Ynys Mon, was elected leader in June 2023. A widely respected figure in Welsh public life, he brought stability following the culture review. He positions Plaid as the natural opposition to Welsh Labour ahead of the 2026 Senedd elections.
Welsh Independence: Polling Trends
| Year | Independence Support | Against Independence | Context |
|---|---|---|---|
| 2014 | ~10% | ~75% | Pre-Brexit; Welsh independence a fringe position |
| 2016 (post-Brexit) | ~15% | ~68% | Brexit vote won; some Welsh nationalists energised |
| 2019 | 20–25% | 55–60% | Boris Johnson majority; anti-Westminster sentiment rises |
| 2021 (YesCymru peak) | 30–35% | 45–50% | COVID contrast between Welsh and Westminster governance |
| 2025–2026 | ~28% | ~52% | Independence a long-term aspiration; 2026 Senedd immediate focus |
Plaid Cymru Key Policy Positions
Welsh Independence
Long-term goal of Welsh independence and EU re-entry as an independent nation. Supports a referendum when polling shows consistent majority support (currently around 28–30%).
Welsh Language
Committed to a million Welsh speakers by 2050 (current: ~900,000). Supports Welsh-medium education as default, extending Welsh language rights in public services, and protecting Welsh-speaking communities.
Devolution Expansion
Calls for full fiscal devolution including control over income tax, corporation tax in Wales, and borrowing powers. Wants police and justice devolved from Westminster to Cardiff Bay.
Green Economy
Backed the Well-being of Future Generations Act and advocates for Wales becoming a net exporter of renewable energy. Supports community energy ownership and opposes energy poverty.
NHS Wales
Calls for significant additional Barnett Formula funding for the fully devolved Welsh NHS. Opposes privatisation. Welsh NHS waiting lists are a key 2026 Senedd battleground.
Anti-Austerity
Consistently opposed Westminster austerity. Supports public sector wage restoration, free prescriptions (already in Wales), and social housing investment.
Frequently Asked Questions
Does Plaid Cymru stand in English constituencies?
No. Plaid Cymru contests elections only in Wales — both Westminster and Senedd seats. It has no presence in England, Scotland, or Northern Ireland.
What was the Cooperative Agreement between Plaid Cymru and Welsh Labour?
The Cooperation Agreement (2021) had Plaid supporting the Labour Welsh Government in exchange for policy concessions including free school meals and free bus passes. It expired ahead of the 2026 Senedd election.
What language does Plaid Cymru operate in?
Plaid Cymru operates fully bilingually in Welsh and English. The party name means Party of Wales in Welsh.
How does Plaid Cymru differ from the SNP?
Both parties are pro-independence and pro-EU, but the SNP governs Scotland and has secured two independence referendums, while Plaid has never been in Welsh government alone and independence polling in Wales is significantly lower.
Related Pages
Wales Polling
All Welsh polling data including Senedd 2026 projections, voting intention by region, and independence polling.
SNP
Scottish National Party — the other major Celtic nationalist party and how its polling compares.
UK Voting Intention
GB-wide poll of polls — where all parties stand in May 2026.