| 15–19 Oct 2026 | 1 News–Verian | Luxon 20Hipkins 17Swarbrick 7Seymour 5Peters 8 | — |
| 8–12 Oct 2026 | 1 News–Verian | Luxon 20Hipkins 20Swarbrick 6Seymour 4Peters 7 | — |
| 6–10 Oct 2026 | Anacta | Luxon 22Hipkins 22 | — |
| 1–5 Oct 2026 | Taxpayers' Union–Curia | Luxon 21.2Hipkins 21Swarbrick 4.9Seymour 6Peters 13.9 | — |
| 1–5 Oct 2026 | 1 News–Verian | Luxon 20Hipkins 18Swarbrick 7Seymour 5Peters 9 | — |
| 24 Sep – 1 Oct 2026 | RNZ–Reid Research | Luxon 17.1Hipkins 21.9Swarbrick 8.7Seymour 7.6Peters 11.2 | Luxon −24Hipkins −3.6 |
| 23–27 Sep 2026 | 1 News–Verian | Luxon 19Hipkins 14Swarbrick 8Seymour 7Peters 7 | — |
| 4–11 Sep 2026 | The Post/Freshwater Strategy | Luxon 35Hipkins 45head-to-head | — |
| 1–3 Sep 2026 | Taxpayers' Union–Curia | Luxon 21.2Hipkins 16.9Swarbrick 7Seymour 7.8Peters 10.7 | — |
| 14–21 Aug 2026 | RNZ–Reid Research | Luxon 19.9Hipkins 21.3Swarbrick 7.4Seymour 6.2Peters 11.1 | Luxon −23Hipkins −3.8 |
| 8–11 Aug 2026 | 1 News–Verian | Luxon 17Hipkins 15Swarbrick 6Seymour 5Peters 7 | — |
| 1–11 Aug 2026 | Talbot Mills | Luxon 22Hipkins 23Swarbrick 8Seymour 7Peters 12 | — |
| 1–4 Aug 2026 | Taxpayers' Union–Curia | Luxon 23.2Hipkins 19.8Swarbrick 4.8Seymour 3.8Peters 10.5 | Luxon −19Hipkins −7Seymour −24Peters −16 |
| 2–9 Jul 2026 | RNZ–Reid Research | Luxon 20Hipkins 23.9Swarbrick 8.2Seymour 6.9Peters 13.2 | — |
| 1–5 Jul 2026 | Taxpayers' Union–Curia | Luxon 19.1Hipkins 19.2Swarbrick 4.6Seymour 5.1Peters 11.8 | — |
| 13–17 Jun 2026 | 1 News–Verian | Luxon 18Hipkins 16Swarbrick 6Seymour 4Peters 10 | — |
| 5–11 Jun 2026 | The Post/Freshwater Strategy | Luxon 37Hipkins 44head-to-head | — |
| 1–10 Jun 2026 | Talbot Mills | Luxon 20Hipkins 21Swarbrick 10Seymour 6Peters 14 | — |
| 4–8 Jun 2026 | Taxpayers' Union–Curia | Luxon 18.8Hipkins 17.1Swarbrick 8.1Seymour 6.3Peters 12.8 | Luxon −19Hipkins −7Seymour −18Peters −5 |
| 1–10 May 2026 | Talbot Mills | Luxon 20Hipkins 23Swarbrick 10Seymour 7Peters 17 | — |
| 3–7 May 2026 | Taxpayers' Union–Curia | Luxon 21.5Hipkins 19Swarbrick 5.4Seymour 3.9Peters 11.6 | — |
| 16 Apr 2026 | Talbot Mills | Luxon 20Hipkins 23Swarbrick 9Seymour 7Peters 15 | — |
| 11–15 Apr 2026 | 1 News–Verian | Luxon 16Hipkins 19Swarbrick 6Seymour 4Peters 12 | — |
| 1–2 Apr 2026 | Taxpayers' Union–Curia | Luxon 20.5Hipkins 21.7Swarbrick 7.4Seymour 4.6Peters 12.1 | — |
| 12–20 Mar 2026 | RNZ–Reid Research | Luxon 17.3Hipkins 20.7Swarbrick 6.8Seymour 6.8Peters 13.1 | Luxon −21Hipkins +0.3 |