| S | D | C | M | F | B | J | |||
|---|---|---|---|---|---|---|---|---|---|
| 2025-07-01 – 2025-07-31 | Gallup / RÚV | 34 7% | 18 7% | 14 6% | 10 5% | 6 7% | 4 9% | 2 4% | (7 5%) |
| 2025-07-04 – 2025-07-23 | Maskína / Vísir | 31 2% | 18% | 16 2% | 9 9% | 6 6% | 6 8% | 2 9% | (8 4%) |
| 2025-06-02 – 2025-06-30 | Gallup / RÚV | 31 8% | 20 6% | 13 7% | 10 7% | 6 5% | 5 6% | 3 3% | (7 8%) |
| – 2025-06-22 | Maskína | 28 1% | 17 3% | 15 3% | 13 0% | 6 6% | 7 0% | 4 4% | (8 3%) |
| 2025-05-01 – 2025-06-01 | Gallup / RÚV | 30 7% | 21 7% | 14 4% | 9 1% | 7 5% | 5 5% | 3 5% | (7 6%) |
| – 2025-05-22 | Maskína | 27 4% | 18 9% | 16 8% | 9 7% | 7 2% | 6 8% | 5 0% | (8 2%) |
| 2025-04-01 – 2025-04-30 | Gallup / RÚV | 29 4% | 22 3% | 13 9% | 8 9% | 7 4% | 6 1% | 4 7% | (7 3%) |
| – 2025-04-22 | Maskína | 26 2% | 20 9% | 15 8% | 10 3% | 7 9% | 7 2% | 4 9% | (6 8%) |
| 2025-03-03 – 2025-03-31 | Gallup / RÚV | 27 0% | 22 4% | 14 6% | 9 3% | 7 7% | 5 7% | 5 4% | (7 9%) |
| 2025-03-05 – 2025-03-19 | Maskína | 23 3% | 24 3% | 14 8% | 10 9% | 8 5% | 6 8% | 4 9% | (6 5%) |