Portugal / Next Portuguese Legislative Election
ICS/ISCTE
Voting intention · fieldwork ended 25 Oct 2026
- Country
- 🇵🇹 Portugal
- Election
- Next Portuguese Legislative Election
- Polling institute
- ICS/ISCTE
- Published
- Not stated by the source
- Fieldwork
- 16 Oct 2026 – 25 Oct 2026
- Sample size
- 808
- Margin of error
- ±3.4 est. (Not published: estimated from sample size (95%, simple random sample))
- Methodology
- Not published
Results
ICS/ISCTE, 25 Oct 2026: Partido Socialista leads with 30.0%, 4.0 points ahead of Chega.
- Partido Socialista30.0%−1.0 percentage points
- Chega26.0%+6.0 percentage points
- Aliança Democrática26.0%−1.0 percentage points
- Iniciativa Liberal4.0%+1.0 percentage points
- LIVRE4.0%+1.0 percentage points
- Coligação Democrática Unitária3.0%−2.0 percentage points
- Bloco de Esquerda2.0%±0.0 percentage points
- Pessoas–Animais–Natureza0.0%−2.0 percentage points
- Juntos pelo Povo0.0%±0.0 percentage points
Change in percentage points vs. the previous poll by the same institute for this election.
Note: The source states no publication date; dated by the end of fieldwork.
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.