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Weighted Average · May 2026

UK Poll of Polls

A weighted rolling average of the 10 most recent polls from BPC-registered pollsters. The poll of polls reduces single-survey noise to give the most reliable ongoing estimate of UK voting intention.

Based on 10 most recent polls · Updated May 2026

Current Poll of Polls Average

Weighted average of last 10 polls · May 2026
Reform UK
28%
▲ +14 since GE24
Conservative
19%
▼ -5 since GE24
Labour
18%
▼ -15 since GE24
Green
15%
▲ +8 since GE24
Lib Dems
13%
▼ -4 since GE24
SNP
3%
▼ -1 since GE24

Last 10 Polls

Individual polls used in the current average
Pollster Fieldwork Lab Con Reform LD Grn SNP n
YouGov1-7 May 2026172029131532,089
Ipsos27 Apr-3 May 2026191927141531,103
Redfield & Wilton4 May 2026181929131531,500
Survation29 Apr-1 May 2026181828141631,011
Deltapoll25-28 Apr 2026172028131631,502
YouGov24-30 Apr 2026181928131632,107
More in Common22-24 Apr 2026182027141531,520
Redfield & Wilton20 Apr 2026192027131531,500
Ipsos14-18 Apr 2026181928141531,001
YouGov10-16 Apr 2026191927131632,044
Weighted Average May 2026 18 19 28 13 15 3 ~16k

How the Poll of Polls is Calculated

Methodology & weighting explained

Which Polls Are Included?

We include only polls from pollsters registered with the British Polling Council (BPC) who publish full tables and fieldwork dates. This excludes advocacy polls, push polls, and online straw polls without proper sampling procedures.

Current included pollsters: YouGov, Ipsos, Survation, Redfield & Wilton, Deltapoll, More in Common, Techne, BMG Research.

Sample Size Weighting

Each poll is weighted by its sample size, up to a cap of 2,500 respondents. A YouGov poll of 2,089 respondents carries more weight than an Ipsos poll of 1,003, but not proportionally more.

Sample size accounts for up to 40% of total poll weighting.

Recency Decay

Polls more than 21 days old carry 70% of their face-weight. Polls more than 35 days old carry 40%. Polls older than 50 days are excluded from the rolling average. This means the average reflects recent trends more strongly than older data.

Recency accounts for approximately 35% of total weighting.

Pollster Contribution Cap

Each pollster is capped at a maximum contribution of 30% of the total weight in any given average. If YouGov publishes three polls in a week, they collectively count as 30%. This prevents any single pollster's methodology from dominating the output.

No house-effect adjustment is applied — we average as-published figures.

GE2024 Benchmarks vs Current Average

Party GE2024 Result May 2026 Poll Avg Change
Labour33%18%-15
Conservative24%19%-5
Reform UK14%28%+14
Lib Dems12%13%+1
Green7%15%+8
SNP2%3%+1

Frequently Asked Questions

What is a poll of polls?

A poll of polls is a weighted average of multiple individual polls, designed to reduce the noise of any single survey and give a more reliable estimate of public opinion. Different polls are weighted by sample size, recency, and pollster contribution caps.

Which party is leading the UK poll of polls in 2026?

As of May 2026, Reform UK leads the UK poll of polls average at 28%, ahead of the Conservatives at 19% and Labour at 18%. The Greens are at 15% and the Liberal Democrats at 13%.

How is the poll of polls calculated?

Our poll of polls uses a weighted rolling average of the 10 most recent polls from BPC-registered pollsters. Polls are weighted by sample size (capped at 2,500) and by recency, with a decay applied to polls older than 21 days. Each pollster is capped at a 30% contribution to prevent any single house dominating.

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Voting Intention Reform UK28% Labour18% Con18.8% Greens15% Lib Dems12.6% Starmer Approval Approve28% Disapprove63% VI Tracker Leader Approval GE2029 Forecast Reform UK Rise Latest Analysis