| S | D | M | C | F | B | P | |||
|---|---|---|---|---|---|---|---|---|---|
| 2025-11-03 – 2025-11-30 | Gallup / RÚV | 31 1% | 16 5% | 19 5% | 12 8% | 5 2% | 5 6% | 3 3% | (6 0%) |
| 2025-09-16 – 2025-09-30 | Prósent / Morgunblaðið | 32% | 18 3% | 9 9% | 14 4% | 7 6% | 7 1% | 5 2% | (5 5%) |
| 2025-09-01 – 2025-09-30 | Gallup / RÚV | 34% | 19 5% | 11 8% | 12 6% | 6 9% | 5 8% | 2 9% | (6 5%) |
| 2025-09-04 – 2025-09-19 | Maskína | 31 9% | 18 6% | 9 1% | 14 3% | 6 3% | 6 3% | 5 8% | (7 7%) |
| 2025-08-01 – 2025-08-31 | Gallup / RÚV | 34 6% | 19 7% | 10 7% | 12 9% | 7 4% | 4 5% | 3 5% | (6 7%) |
| – 2025-08-21 | Maskína / Vísir | 31 6% | 18 6% | 9 6% | 16 1% | 6 3% | 6 3% | 4 5% | (7 0%) |
| 2025-07-01 – 2025-07-31 | Gallup / RÚV | 34 7% | 18 7% | 10 5% | 14 6% | 6 7% | 4 9% | 3 5% | (6 4%) |
| 2025-07-04 – 2025-07-23 | Maskína / Vísir | 31 2% | 18% | 9 9% | 16 2% | 6 6% | 6 8% | 5% | (6 3%) |
| 2025-06-02 – 2025-06-30 | Gallup / RÚV | 31 8% | 20 6% | 10 7% | 13 7% | 6 5% | 5 6% | 4 1% | (7 0%) |
| – 2025-06-22 | Maskína | 28 1% | 17 3% | 13 0% | 15 3% | 6 6% | 7 0% | 4 6% | (8 1%) |
| 455 | 455 | 3 744 | |
| 2009 | 8 | 8 | 44 |
| 2010 | — | — | — |
| 2011 | — | — | — |
| 2012 | 25 | 25 | 186 |
| 2013 | 33 | 33 | 284 |
| 2014 | 15 | 15 | 90 |
| 2015 | 27 | 27 | 162 |
| 2016 | 59 | 59 | 401 |
| 2017 | 50 | 50 | 418 |
| 2018 | 28 | 28 | 230 |
| 2019 | 31 | 31 | 277 |
| 2020 | 28 | 28 | 251 |
| 2021 | 41 | 41 | 369 |
| 2022 | 25 | 25 | 225 |
| 2023 | 26 | 26 | 234 |
| 2024 | 38 | 38 | 372 |
| 2025 | 21 | 21 | 201 |
| 2026 | — | — | — |