Latest Election Polls by Survation

About Survation

Party Analysis: Statistical Deviations by Survation

Historical Polls vs. Election Trend (in %)

Lower
Consistent
Higher
Green Party
Centre-Left
57
40
3
Labour
Social Democratic
14
38
48
Liberal Democrats
Transversal
21
54
25
Plaid Cymru
Centre-Left
0
99
1
Reform UK
Right
35
53
13
Scottish National Party
Social Democratic
3
95
2
Tories
Conservative
27
45
27

How is the data calculated?

The PolitPro Election Trend serves as the benchmark, using a time-weighted average of all current surveys. A poll value is flagged if it deviates by more than one percentage point from this trend.

Performance Track Record: Historical Accuracy of Survation

2.1

Election Accuracy

On average, Survation's figures deviate by 2.1 percentage points between their final pre-election polls and actual election results.

Average Deviation of Pre-Election Polls from Actual Results (Historical)

How is election accuracy calculated?

Accuracy indicates how closely pre-election polls aligned with actual election results. We compare final surveys from various institutes with official outcomes. To do this, we calculate the average deviation across all parties that received at least 3% of the vote. Most election polls have a standard margin of error of 2-3 percentage points. We categorize average deviations as follows: up to 1 percentage point is "very good" (green); up to 2 points is "good" (yellow); up to 3 points is "acceptable" (orange), though this may indicate significant outliers for specific parties. Deviations exceeding 3 percentage points suggest a lack of predictive power and are rated "poor" (red).

Data Sources and Methodology

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