Centro de Investigaciones Sociológicas (CIS)

CIS — Preelectoral 3584 — Congress of Deputies — 12 November 2026

7 Oct–30 Oct 2026 · National

Voting intention

Results

Sample 45,074
1 Partido Socialista Obrero Español
33.3%result
2 Partido Popular
25.5%result
3 Vox
18.4%result
4 Frente Amplio (2026 poll label)
4.7%result
5 Other parties
3.4%result
6 ERC-Podemos
3.1%result
7 EH Bildu
1.8%result
8 Front Valencià
1.6%result
9 Adelante Andalucía
1.5%result
10 Se Acabó La Fiesta
1.4%result
11 Junts per Catalunya
1.2%result
12 Podemos
1.1%result
13 Bloque Nacionalista Galego
1.0%result
14 Partido Nacionalista Vasco
0.7%result
15 Blank votes
0.5%result
16 UPC
0.4%result
17 Ara Més-Front Ampli
0.2%result
18 CC-Municipalistas Primero Canarias
0.2%result
Fieldwork7 Oct–30 Oct 2026
PublishedNov 12, 2026

Notes

CIS study 3584, pre-election survey for 29 November 2026. Published 12 November; fieldwork 7–30 October; 45,074 telephone interviews. Results are CIS estimated vote as a percentage of valid votes, not direct voting intention. Source: original CIS national estimate PDF. Seat ranges: PSOE 134–143, PP 98–106, Vox 57–65; these are CIS projections, not Votendi forecasts. ERC-Podemos is the source's combined Catalonia campaign label, not a formal coalition; retain separately from Podemos. Other parties 3.4%; blank 0.5%. Rounding can affect totals.