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Poll puts Plaid Cymru ahead in Wales for Westminster election

04 Nov 2025 4 minute read
Leader of Plaid Cymru, Rhun ap Iorwerth applauds after Plaid Cymru’s Lindsay Whittle is declared winner for the Caerphilly Senedd by-election. Photo Andrew Matthews/PA Wire

Martin Shipton

A poll that has to be treated with caution because of its low sample has put Plaid Cymru seven points ahead of Reform UK at a notional general election in Wales.

The YouGov poll, which was carried out on a Britain-wide basis, shows its results on a country-by-country basis.

The figures for Wales put Plaid Cymru on 28%, with Reform on 21%, the Green Party on 19%, Labour on 15%, the Conservatives on 12% and the Liberal Democrats on 4%. Other parties were at 2%.

The unweighted sample was 121 voters, with the weighted sample being 114. Research was carried out on November 2 and November 3.

Professional pollsters are reluctant to draw conclusions from polls with such low figures, but the results are nevertheless extraordinary.

The Green Party posted a message on X drawing attention to the fact that it was in third place, ahead of Labour and the Conservatives.

While Plaid Cymru has been performing well in recent polls, it is especially unusual for it to be leading in Wales in a Westminster general election poll. It usually performs significantly better in Senedd elections than in general elections.

In England, Reform was in the lead with 28%, followed by Labour on 20%, the Conservatives on 18%, the Liberal Democrats and Greens both on 16% and other parties on 2%. The unweighted sample in England was 2,082 and the weighted sample 2,055.

In Scotland the SNP led with 35%, with Reform on 19%, Labour on 18%, the Liberal Democrats and Greens on 10%, the Conservatives on 4% and other parties on 2%. The unweighted sample was 207 and the weighted sample 173.

Across Britain as a whole, Reform was on 27%, Labour 20%, Green 18%, Conservarives 16%, Liberal Democrats 15%, the SNP 3%, Plaid Cymru 1% and other parties 2%.

Lottery

At Westminster level, translating votes into seats in something of a lottery because of the First Past The Post electoral system.

A week ago, Darren Hughes the chief executive of the Electoral Reform Society said in relation to an earlier YouGov poll: “If there were a general election tomorrow, who would form the next government? It sounds like a simple question if you have access to the latest polls. But when the latest YouGov poll, released on October 28, shows Reform UK on 27%, Labour and the Conservatives tied on 17% each, the Greens on 16%, Liberal Democrats on 15%, and the SNP on 3%, it’s anything but.

“It’s a striking poll for a few reasons, the old duopoly of Labour and the Conservatives have a combined vote share of 34%, a massive collapse from 2017, when over 80% of votes went to those two parties (the highest combined vote share since 1970). The Greens have their highest poll share ever on 16% and four parties sit within three percentage points from each other.

“We live in a multi-party Britain. But under Westminster’s First Past the Post voting system, it’s impossible to tell what Parliament would actually look like from this poll.

“Yet voters are supposed to decide who to vote for based on polls like this. Without a fancy statistical model or a degree in psephology, you’d just be guessing.”

“It shouldn’t take an expert to translate public opinion into seats. But the brutal truth is that in our system, votes don’t add up to representation, they get filtered, distorted and wasted along the way.

“With Reform UK on just over a quarter of the vote, they will probably get the most MPs, but who knows if that means they will be in government alone? Who knows how many seats the other parties will get. That’s not stability. That’s chaos wrapped up as tradition.”


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smae
smae
29 days ago

121? That’s not a sample, that’s asking around at the local pub. Basically nothing can be inferred from that. Minimum sample size for reliability is 1000, probably needs 2 or 3000 though. A low sample size that would warrant a news article would be about 500. Anything beneath that is gossip.

The poll doesn’t need a pinch of salt… it needs a few tonnes.

Undecided
Undecided
29 days ago
Reply to  smae

Absolutely. Pointless exercise.

David Richards
David Richards
29 days ago

Honestly cant ever remember plaid leading in Wales a poll for Westminster (tho a small sample admittedly). This still bodes well in the run up to the senedd election. While it continues to look terminal for labour in Wales.

Last edited 29 days ago by David Richards
Rob W
Rob W
29 days ago

Yes, it is a very small sample size, so it’s anyone’s guess whether it is anywhere near accurate or not. Still, it makes for a nice read anyway!!

Richard Lice
Richard Lice
29 days ago

What is for sure there will be a blizzard of polls in the next few months.

Yougov last week had the Greens topping the poll nationwide in the under 49s

What it does look like though is the best Reform can achieve is a Pyrrhic victory in Wales

All those turquoise £s burned in a vain attempt to gain control
That really would be very satisfying.

Mab Meirion
Mab Meirion
29 days ago

Rhun, listen to Wes Streeting’s words “it has become socially accepted to be racist”…

I have termed this as just one aspect of the ‘Fat Shanks Effect’, let us not return to the ’70’s’. Put Plaid front and center in this fight against the Gospel according to Bannon, Miller, Farage, Jenrick and Twmp…Tall order I know…!

John Williams
John Williams
29 days ago

Why are we not given the confidence intervals for these polls? With such small sample sizes it becomes ever more important for people to be given an idea of the upper & lower limits of the possible range of percentages implied by the data collected.

James Edwards
James Edwards
29 days ago

Great news I think this is pretty much where we are at the moment although I expect Plaid to increase that lead in the run up to next May as there is simply no credible alternative. The racist English National Party were humiliated in Caerphilly and that was because the people of Caerffilli and brilliant journalists on here put them under serious scrutiny for the first time. Shame on the English media for allowing that rabble to get as far as they have .

David J
David J
26 days ago

More evidence (although slight) that the Greens in Cymru need to back off and not risk weakening the vote for Plaid, as the main opposition to Reform. It will be time for the Greens to have their say when we have a Plaid government and eventual independence. In the meantime, let them concentrate their efforts in england, and not be useful idiots for Farage.

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