| Fieldwork Period | Polling Firm | Commissioner(s) | Sample Size | LAB | NAT | NZ First | GRN | ACT | TPM | TOP | FNZ | NZOFP | CPNZ | NZL | Other |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-05-01 – 2026-05-10 | Talbot Mills | — | — | 36% | 29% | 14% | 9% | 7% | 2% | — | — | — | — | — | 3% |
| 2026-05-03 – 2026-05-07 | Curia | Taxpayers’ Union | 1000 | 31.9% | 30% | 11.7% | 9.7% | 6.5% | 4.1% | 2.8% | — | 0.5% | 0.8% | — | 2.0% |
| 2026-03-30 – 2026-04-26 | Roy Morgan | — | 887 | 34% | 25.5% | 11.5% | 11% | 10.5% | 3% | 4% | — | — | — | — | 0.5% |
| 2026-04-16 | Talbot Mills | — | 1082 | 36% | 29% | 15% | 7% | 8% | 1.9% | 2.3% | — | — | — | — | — |
| 2026-04-11 – 2026-04-15 | Verian | 1News | 1010 | 37% | 30% | 10% | 11% | 7% | 1.5% | 3.3% | — | 0.3% | 0.5% | — | 0.4% |
| 2026-04-01 – 2026-04-02 | Talbot Mills | — | 1082 | 36% | 29% | 15% | 7% | 8% | 1.9% | 2.3% | — | — | — | — | — |
| 2026-04-01 – 2026-04-02 | Curia | Taxpayers’ Union | 1000 | 33.4% | 29.8% | 13.6% | 7.8% | 9% | 2.6% | 2.6% | — | — | — | — | 1.3% |
| 2026-02-23 – 2026-03-22 | Roy Morgan | — | 872 | 34% | 26.5% | 11% | 11% | 10% | 3% | 4% | — | — | — | — | 0.5% |
| 2026-03-12 – 2026-03-20 | Reid Research | RNZ | 1000 | 35.6% | 30.8% | 10.6% | 10.1% | 7% | 3.2% | 2% | — | — | — | — | 0.7% |
| 2026-03-02 – 2026-03-12 | Talbot Mills | — | 1059 | 35% | 32% | 11% | 11% | 7% | 1.7% | 2.4% | — | — | — | — | — |
| 2026-03-01 – 2026-03-03 | Curia | Taxpayers’ Union | 1000 | 34.4% | 28.4% | 9.7% | 10.5% | 7.5% | 3.2% | 1.9% | — | 1.7% | 0.8% | — | 1.8% |
| 2026-01-27 – 2026-02-22 | Roy Morgan | — | 870 | 30% | 31% | 9.5% | 14.5% | 8% | 2.5% | 4% | — | — | — | — | 0.5% |
| 2026-02-06 – 2026-02-12 | Freshwater Strategy | Infrastructure New Zealand–The Post | 1039 | 37% | 30% | 11% | 10% | 6% | 2% | — | — | — | — | — | 3% |
| 2026-02-07 – 2026-02-11 | Verian | 1News | 1003 | 32% | 34% | 10% | 11% | 9% | 2% | 1% | — | 0.2% | 0.2% | — | 1.3% |
| 2026-02-01 – 2026-02-03 | Curia | Taxpayers’ Union | 1000 | 34.1% | 31.3% | 10.5% | 10.3% | 6.7% | 2.9% | 1.4% | — | 1.2% | 0.1% | — | 1.5% |
| 2026-01-16 – 2026-01-26 | Talbot Mills | — | 1087 | 35% | 31% | 9% | 10% | 8% | 3% | — | — | — | — | — | — |
| 2026-01-06 – 2026-01-26 | Roy Morgan | — | 881 | 30.5% | 34.5% | 9% | 10.5% | 8.5% | 3% | 2.5% | — | — | — | — | 1.5% |
| 2026-01-15 – 2026-01-22 | Reid Research | RNZ | 1000 | 35% | 31.9% | 9.8% | 9.6% | 7.6% | 3% | 2.3% | — | — | — | — | 0.9% |
| 2026-01-14 – 2026-01-18 | Curia | Taxpayers’ Union | 1000 | 34.4% | 31.5% | 11.9% | 7.7% | 7% | 3% | 0.7% | — | 0.6% | 0.3% | — | 2.9% |
| 2025-11-24 – 2025-12-21 | Roy Morgan | — | 859 | 32.5% | 33% | 10% | 12% | 7.5% | 2.5% | 2.5% | — | — | — | — | 0% |
| 2025-12-05 – 2025-12-10 | Freshwater Strategy | Infrastructure New Zealand–The Post | 1031 | 38% | 30% | 9% | 8% | 8% | 2% | — | — | — | — | — | 4% |
| 2025-12-03 – 2025-12-07 | Curia | Taxpayers’ Union | 1000 | 31.6% | 30% | 8.1% | 10.8% | 8.9% | 3.1% | 1.6% | — | 1% | 1% | — | 4.0% |
| 2025-11-29 – 2025-12-03 | Verian | 1News | 1007 | 35% | 36% | 9% | 7% | 10% | 0.6% | 0.4% | — | 0.1% | 0.1% | — | 1.9% |
| 2025-10-27 – 2025-11-23 | Roy Morgan | — | 829 | 28% | 33% | 9% | 14.5% | 8% | 2% | 2.5% | — | — | — | — | 3% |
| 2025-11-01 – 2025-11-10 | Talbot Mills | — | 1102 | 38% | 33% | 8% | 9% | 7% | 2.4% | — | — | — | — | — | — |
| 2025-11-02 – 2025-11-06 | Curia | Taxpayers’ Union | 1000 | 33.3% | 30.2% | 9.1% | 9.2% | 8.6% | 3.3% | 1.2% | — | 1.5% | 1.2% | — | 2.4% |
| 2025-09-29 – 2025-10-26 | Roy Morgan | — | 857 | 30.5% | 32% | 9.5% | 12% | 8% | 2.5% | 2.5% | — | — | — | — | 3% |
| 2025-10-01 – 2025-10-10 | Talbot Mills | — | 1097 | 35% | 29% | 12% | 10% | 8% | 4% | — | — | — | — | — | — |
| 2025-10-04 – 2025-10-08 | Verian | 1News | 1014 | 32% | 34% | 9% | 11% | 8% | 2.8% | 0.8% | — | 0.4% | 0.3% | — | 1.7% |
| 2025-10-03 – 2025-10-08 | Freshwater Strategy | The Post | 1050 | 34% | 31% | 11% | 9% | 9% | 3% | — | — | — | — | — | 2% |
| 2025-10-01 – 2025-10-05 | Curia | Taxpayers’ Union | 1000 | 31.2% | 29.6% | 10.6% | 12% | 6.6% | 4.4% | 1.6% | 2.3% | — | — | 1% | 0.7% |
| 2025-08-25 – 2025-09-21 | Roy Morgan | — | 870 | 28.5% | 31.5% | 8% | 13.5% | 9% | 5.5% | 2.5% | — | — | — | — | 1.5% |
| 2025-09-04 – 2025-09-12 | Reid Research | RNZ | 1000 | 34.3% | 32.5% | 8.7% | 10.9% | 7.2% | 4.1% | 1.4% | — | — | — | — | 0.9% |
| 2025-09-01 – 2025-09-10 | Talbot Mills | — | 1000 | 35% | 31% | 10% | 10% | 7% | 4% | — | — | — | — | — | — |
| 2025-08-31 – 2025-09-02 | Curia | Taxpayers’ Union | 1000 | 33.8% | 33.1% | 8.1% | 10.7% | 6.7% | 4.3% | 1.1% | — | 0.8% | 0.3% | — | 1.1% |
| 2025-07-28 – 2025-08-24 | Roy Morgan | — | 873 | 34% | 29% | 7% | 13.5% | 10.5% | 2.5% | 3% | — | — | — | — | 0.5% |
| 2025-08-01 – 2025-08-10 | Talbot Mills | — | 1000 | 34% | 32% | 9.3% | 11% | 8% | 4.4% | 2.8% | — | — | — | — | — |
| 2025-08-02 – 2025-08-06 | Verian | 1News | 1002 | 33% | 34% | 9% | 10% | 8% | 3.7% | 1.3% | — | 0.1% | 0.2% | — | 0.7% |
| 2025-08-03 – 2025-08-05 | Curia | Taxpayers’ Union | 1000 | 33.6% | 31.8% | 7.8% | 9.8% | 8.6% | 3.2% | 2.6% | — | 1.1% | — | — | 1.5% |
| 2025-06-30 – 2025-07-27 | Roy Morgan | — | 832 | 31% | 31% | 9.5% | 11.5% | 10.5% | 3.5% | 1% | — | — | — | — | 2% |
| 2025-07-01 – 2025-07-10 | Talbot Mills | — | 1090 | 35% | 32% | 7% | 12% | 8% | 3.8% | — | — | — | — | — | — |
| 2025-07-02 – 2025-07-06 | Curia | Taxpayers’ Union | 1000 | 31.6% | 33.9% | 9.8% | 9.4% | 9.1% | 3.5% | 1.2% | — | 0.1% | 0.5% | — | 0.9% |
| 2025-05-26 – 2025-06-22 | Roy Morgan | — | 812 | 28.5% | 32% | 8% | 11% | 11.5% | 5% | 3% | — | — | — | — | 1% |
| 2025-06-12 – 2025-06-15 | Freshwater Strategy | The Post | 1150 | 34% | 32% | 8% | 11% | 8% | 2% | — | — | — | — | — | 4% |
| 2025-06-07 – 2025-06-09 | Curia | Taxpayers’ Union | 1000 | 34.8% | 33.5% | 6.1% | 8.2% | 9.1% | 3.3% | 1.8% | — | 1.1% | 0.7% | — | 1.4% |
| 2025-05-23 – 2025-05-30 | Reid Research | RNZ | 1008 | 33.2% | 30.7% | 9.1% | 11.6% | 6.6% | 5.5% | 2.2% | — | — | 0.8% | — | 0.3% |
| 2025-05-24 – 2025-05-28 | Verian | 1News | 1002 | 29% | 34% | 8% | 12% | 8% | 3.7% | 1.3% | — | 1.1% | 0.4% | — | 2.4% |
| 2025-04-28 – 2025-05-25 | Roy Morgan | — | 799 | 29% | 31.5% | 6.5% | 11.5% | 12% | 4.5% | 3% | — | — | — | — | 2% |
| 2025-04-30 – 2025-05-04 | Curia | Taxpayers’ Union | 1000 | 33.2% | 34.6% | 7.4% | 9.1% | 9.5% | 3.9% | 0.5% | — | 0.4% | — | — | 1.4% |
| 2025-03-24 – 2025-04-20 | Roy Morgan | — | 829 | 28.5% | 31% | 9% | 14% | 9% | 4.5% | 2.5% | — | — | — | — | 1.5% |