| PP | PSOE | Vox | Sumar | Podemos | ERC | SALF | |||
|---|---|---|---|---|---|---|---|---|---|
| 2026-01-05 – 2026-01-10 | CIS | 23% | 31 7% | 17 7% | 7 2% | 3 5% | 2 6% | 1 8% | (12 5%) |
| 2026-01-05 – 2026-01-09 | NC Report / La Razón | 33 5% | 26 3% | 17 6% | 6 1% | 4 4% | 1 8% | — | (10 3%) |
| 2025-12-29 – 2026-01-05 | 40dB / Prisa | 31 5% | 27 1% | 17 9% | 5 9% | 3 5% | — | 2 1% | (12 0%) |
| 2025-12-22 – 2025-12-29 | Sigma Dos / El Mundo | 32 7% | 26 5% | 17 2% | 8 5% | 4 4% | 1 9% | 1 2% | (7 6%) |
| 2025-12-15 | Invymark / laSexta | 33 5% | 27 4% | 18 6% | 5 2% | 3 8% | 1 8% | 1 5% | (8 2%) |
| 2025-12-05 – 2025-12-07 | SocioMétrica / El Español | 33 4% | 26 2% | 17 4% | 7 5% | 2 8% | 1 9% | 2 3% | (8 5%) |
| 2025-12-01 – 2025-12-05 | CIS | 22 4% | 31 4% | 17 6% | 7 8% | 4 1% | 2 1% | 2 4% | (12 2%) |
| 2025-11-26 – 2025-12-05 | Sigma Dos / El Mundo | 33 1% | 27 4% | 16 9% | 7 9% | 4 3% | 1 9% | 1 2% | (7 3%) |
| 2025-11-27 – 2025-12-01 | 40dB / Prisa | 31% | 27 8% | 17 4% | 5 7% | 3 7% | — | 2 3% | (12 1%) |
| 2025-12-01 | Invymark / laSexta | 33 2% | 27 6% | 18 5% | 5% | 3 8% | — | 1 4% | (10 5%) |
:
| 1 296 | 1 318 | 11 181 | |
| 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 | 3 | 3 | 31 |