Latest voting intention survey by 40dB for Spain
In the latest voting intention survey for the election in Spain conducted by 40dB, the parties received the following results: Partido Popular 31%, PSOE 27.8%, Vox 17.4%, Sumar 5.7%, Podemos 3.7% and SALF 2.3%. The voting intention survey interviewed a total of 2500 people during the period 01.12.2025 - 01.12.2025.
2500 participants
27.11.2025 - 01.12.2025
40dB
Seats in parliament
350
Majority requires 176 seats
Sumar
23
6.6%
POD
15
4.3%
PSOE
114
32.6%
PP
127
36.3%
Vox
71
20.3%
Partido Popular + PSOE
Partido Popular + Vox
PSOE + Sumar + Podemos
81
PolitPro Score
40dB achieves a score of 81/100 in the PolitPro Score.
What is the PolitPro Score?
The PolitPro Score evaluates the reliability of polling institutes based on their accuracy in elections and neutrality toward political parties. Significant biases in favor of or against parties compared to election trends result in deductions. The maximum score is 100.
Rating of parties
Comparison of historical poll results with overall election trends across all institutes (in %)
What are significant differences?
The PolitPro election trend, which calculates a time-weighted average value of current election polls, serves as a comparison value. A poll value is considered higher/lower if it is more than one percentage point higher/lower than the election trend. The overview shows all parties for which there is a deviation in a particular direction in at least 30% of the institute's election polls.
Accuracy in elections
1.0
Average deviation
On average, party poll results in 40dB pre-election polls deviate from the actual result by 1.0 percentage points.
Average Deviation of Pre-Election Polls from the Results of Recent Elections
| Deviation | Election | Rank |
|---|---|---|
|
0.9
|
Parliamentary Election in Spain 2019 | 4/19 |
|
1.15
|
Parliamentary Election in Spain 2019 | 5/15 |
How is an institute’s accuracy calculated?
The accuracy indicates how closely pre-election polls matched the actual election results.