Spain / Next Spanish General Election
Sigma Dos
Voting intention · published 31 Jan 2026
- Country
- 🇪🇸 Spain
- Election
- Next Spanish General Election
- Polling institute
- Sigma Dos
- Published
- 31 Jan 2026
- Fieldwork
- 26 Jan 2026 – 30 Jan 2026
- Sample size
- 1,819
- Margin of error
- ±2.3 est. (Not published: estimated from sample size (95%, simple random sample))
- Methodology
- Not published
Results
Sigma Dos, 31 Jan 2026: Partido Popular leads with 32.4%, 6.3 points ahead of Partido Socialista Obrero Español.
- Partido Popular32.4%−0.3 percentage points
- Partido Socialista Obrero Español26.1%−0.4 percentage points
- Vox17.8%+0.6 percentage points
- Sumar8.2%−0.3 percentage points
- Podemos4.6%+0.2 percentage points
- Esquerra Republicana de Catalunya1.8%−0.1 percentage points
- Euskal Herria Bildu1.2%+0.2 percentage points
- Partido Nacionalista Vasco1.1%+0.1 percentage points
- Junts per Catalunya0.9%−0.1 percentage points
- Bloque Nacionalista Galego0.8%±0.0 percentage points
- Aliança Catalana0.7%±0.0 percentage points
- Canarian Coalition0.4%−0.1 percentage points
- Unión del Pueblo Navarro0.2%+0.1 percentage points
Change in percentage points vs. the previous poll by the same institute for this election.
Note: Commissioned by El Mundo.
How to read a poll
- Sample size is how many people were asked. More people means less random error, never none.
- ±3 is the margin of error: the real figure is likely within 3 points either way of the one shown.
- Two polls can differ because they were taken on different dates, with different methods and different samples.
- est. means the institute did not publish a margin of error, so it is estimated from the sample size.
- The average smooths this out: it combines recent polls, so one unusual poll cannot swing the picture.