| PP | PSOE | Vox | Sumar | Podemos | ERC | SALF | |||
|---|---|---|---|---|---|---|---|---|---|
| 2025-09-15 – 2025-09-19 | Invymark / laSexta | 36 1% | 28 3% | 16 3% | 4 7% | 4% | — | 1 5% | (9 1%) |
| 2025-09-10 – 2025-09-15 | DYM / Henneo | 35 2% | 26 9% | 15 7% | 5 6% | 3 9% | — | 0 4% | (12 3%) |
| 2025-09-08 – 2025-09-12 | Celeste-Tel / Onda Cero | 34 9% | 26 1% | 15 2% | 5 6% | 4 7% | 1 7% | 1 7% | (10 1%) |
| 2025-09-05 – 2025-09-11 | GAD3 / ABC | 32 0% | 26 9% | 17 9% | 6 6% | 4 0% | 2 0% | 2 0% | (8 6%) |
| 2025-09-10 – 2025-09-11 | Target Point / El Debate | 31 6% | 27% | 17 2% | 7 4% | 4 1% | — | 1 9% | (10 8%) |
| 2025-09-03 – 2025-09-09 | Hamalgama Métrica / Vozpópuli | 34 4% | 25 8% | 16% | 6% | 4 7% | 1 7% | 2% | (9 4%) |
| 2025-09-01 – 2025-09-06 | NC Report / La Razón | 35 2% | 25 8% | 15 4% | 4 9% | 5 2% | 1 6% | — | (11 9%) |
| 2025-09-01 – 2025-09-06 | CIS | 23 7% | 32 7% | 17 3% | 7 9% | 4 3% | 2 1% | 1 6% | (10 4%) |
| 2025-09-02 – 2025-09-05 | Demoscopia y Servicios / esRadio | 35 1% | 26 6% | 16 7% | 6 1% | 5 1% | 1 6% | 1 7% | (7 1%) |
| 2025-08-29 – 2025-09-01 | 40dB / Prisa | 30 7% | 27 7% | 17 4% | 6 6% | 3 4% | — | 1 6% | (12 6%) |
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