Poll

Sigma Dos for El Mundo poll of August 26, 2026

In the Sigma Dos for El Mundo poll (fieldwork August 20, 2026 to August 26, 2026, 2,173 interviews), the list with the most votes is PP, on 33.1 % of the vote and 143 seats. Next comes PSOE, on 25.4 % and 101 seats. Compared with this pollster's previous poll (July 20, 2026), PP moved by +0.3 points. In our average that day, PP stood at 32.1 %.

Pollster
Sigma Dos
Commissioned by
El Mundo
Fieldwork
20-26 Aug
Sample
2,173

Estimate by party

PartyVoteSeatsVs. previousVs. average
PP33.1 %143(+2)+0.3+1.0
PSOE25.4 %101(−6)−0.7−1.2
Vox17.9 %61(+1)+0.6+0.1
Sumar6.6 %10(−2)−0.8+0.6
Podemos2.8 %1−0.2−0.4
ERC2.4 %8+0.1+0.3
EH Bildu1.2 %6(−1)−0.1−0.2
Junts1.1 %4(−1)0.0−0.3
PNV1.0 %60.0−0.1
Aliança.cat1.0 %4(−1)0.0−0.3
BNG0.8 %20.0−0.1
AA0.8 %2−0.2−0.1
CC0.5 %10.00.0
UPN0.2 %10.00.0

Vs. previous: change in points from the same pollster's poll of July 20, 2026. Vs. average: difference from our weighted average of August 26, 2026.

Figures from the poll table on Wikipedia (CC BY-SA 4.0). Original publication: El Mundo.

How to cite: Su Momento, “Sigma Dos for El Mundo poll of August 26, 2026”, August 26, 2026, https://sumomento.com/en/encuestas/sigma-dos-2026-08-26