.
| PP | PSOE | Vox | Sumar | Podemos | ERC | SALF | |||
|---|---|---|---|---|---|---|---|---|---|
| 2026-08-05 – 2026-08-06 | SocioMétrica / El Español | 33 8% | 26% | 17% | 5 9% | 2 7% | 2 1% | 2 3% | (10 2%) |
| 2026-07-31 – 2026-08-04 | NC Report / La Razón | 34 2% | 25 2% | 18% | 5 9% | 3 5% | 2% | — | (11 2%) |
| 2026-07-15 – 2026-07-20 | DYM / Henneo | 34 9% | 27% | 16 5% | 3 8% | 4 1% | — | 1% | (12 7%) |
| 2026-07-06 – 2026-07-20 | Sigma Dos / El Mundo | 32 8% | 26 1% | 17 3% | 7 4% | 3% | 2 3% | — | (11 1%) |
| 2026-07-15 – 2026-07-17 | Target Point / El Debate | 32 1% | 26 1% | 17 6% | 6 1% | 2 7% | — | 2 4% | (13 0%) |
| 2026-07-06 – 2026-07-09 | GESOP / Prensa Ibérica | 29 4% | 26 5% | 17 8% | 7 7% | 4% | 2 3% | 2% | (10 3%) |
| 2026-06-30 – 2026-07-06 | Hamalgama Métrica / Vozpópuli | 33 8% | 25 9% | 18 8% | 5 9% | 3 8% | 1 8% | 1 6% | (8 4%) |
| 2026-07-01 – 2026-07-06 | CIS | 25 1% | 33% | 15 3% | 6 1% | 2 5% | 2 7% | 2 6% | (12 7%) |
| 2026-07-02 – 2026-07-04 | SocioMétrica / El Español | 33 6% | 25 7% | 16 9% | 6 0% | 2 8% | 2 3% | 2 2% | (10 5%) |
| 2026-06-25 – 2026-07-01 | NC Report / La Razón | 34 5% | 25% | 17 8% | 6 1% | 3 6% | 2% | — | (11 0%) |
:
| 1 350 | 1 372 | 11 696 | |
| 2016 | 50 | 50 | 329 |
| 2017 | 93 | 93 | 609 |
| 2018 | 97 | 97 | 696 |
| 2019 | 185 | 186 | 1 592 |
| 2020 | 112 | 112 | 926 |
| 2021 | 136 | 136 | 1 263 |
| 2022 | 180 | 180 | 1 649 |
| 2023 | 229 | 238 | 1 937 |
| 2024 | 113 | 125 | 1 162 |
| 2025 | 98 | 98 | 987 |
| 2026 | 57 | 57 | 546 |