# 2025 Argentine legislative election

Legislative elections are scheduled to be held in Argentina on 26 October 2025. Half of the seats in the Chamber of Deputies and a third of the seats in the Senate will be elected.

## Background

These midterm elections will be the first during the presidency of Javier Milei.

## Opinion polls
### 2025

| Polling firm | Fieldwork date | Sample size | | Kirchnerism | Federal Peronism | | | | Others | Undecided | Lead |
| Opina Argentina | 1–4 March 2025 | 2085 | 38 | 32 | 4 | 7 | 4 | 4 | 3 | 7 | 6 |
| Analogías | 25–28 February 2025 | 2733 | 33.1 | 30.4 | - | 10.6 | 3.6 | 3 | 4.6 | 14.9 | 2.7 |
| Tendencias | 24–28 February 2025 | 11077 | 40.9 | 35.1 | 1.9 | 8.2 | 8.2 | 5.8 | - | 8.1 | 5.8 |
| Poliarquía | February 2025 | — | 36 | 16 | 9 | 9 | 3 | 9 | 2 | 17 | 20 |
| Isasi Burdman | February 2025 | — | 37 | 10 | 11 | 12 | 4 | 3 | 23 | 23 | 25 |
| Proyección | 17–22 February 2025 | 2029 | 28.8 | 17.9 | 15.4 | 5.8 | 3.3 | 2.2 | 2.7 | 23.9 | 10.9 |
| Management & Fit | 10–21 February 2025 | 2200 | 41.6 | 26.7 | 9.4 | 6.4 | 2.6 | 3.5 | 3.1 | 6.6 | 14.9 |
| Pulso Research | 1–7 February 2025 | 1777 | 31.4 | 18.4 | 5.4 | 6.3 | 3.3 | 4.5 | 9.4 | 21.2 | 13 |
| Aresco | January 2025 | — | 47.2 | 36.1 | — | 7.9 | 6 | — | 2.8 | — | 11.1 |
| Isasi Burdman | January 2025 | — | 36 | 9 | 12 | 10 | 4 | 3 | 4 | 21 | 24 |
| Management & Fit | 26 January 2025 | — | 42.1 | 26.5 | 9.8 | 7 | 1.8 | 2.8 | 3 | 7 | 15.6 |
| Analogías | 19–23 January 2025 | 2645 | 33.6 | 31.1 | — | 8.7 | 4.4 | 4.4 | — | 17.8 | 2.5 |
| Pulso Research | 6–12 January 2025 | 1900 | 30.2 | 15.9 | 7 | 5 | 3.6 | 4 | 8.2 | 26.1 | 14.3 |

### 2024

| Polling firm | Fieldwork date | Sample size | | Kirchnerism | Federal Peronism | | | | Others | Undecided | Lead |
| D'Alessio Irol - Berensztein | December 2024 | 1035 | 35 | 24 | — | 17 | 8 | 4 | 9 | 2 | 11 |
| Isasi Burdman | December 2024 | 2065 | 37 | 10 | 11 | 9 | 3 | 5 | 21 | 21 | 26 |
| Fixer | 11–20 December 2024 | 1100 | 37 | 35 | 2 | 6 | 3 | 5 | — | 8 | 2 |
| Synospsis | 5–13 December 2024 | — | 39.8 | 26.8 | 11 | 5.7 | 2.9 | 2.9 | 4 | 6.9 | 13 |
| Pulso Research | 4–11 December 2024 | 1700 | 32.6 | 20.8 | 6 | 3.8 | 2.8 | 3.9 | 7.7 | 22.3 | 11.8 |
| Aresco | December 2024 | — | 45.4 | 34.3 | — | 7 | 4.1 | — | 9.1 | — | 11.1 |
| CB Consultora | 2–6 December 2024 | 1562 | 39.4 | 18.5 | 9 | 6.6 | 1.8 | 5.4 | 3.8 | 15 | 20.9 |
| Sentimetro | 3 December 2024 | 1100 | 46 | 14 | 6 | 7 | 2 | 6 | 3 | 16 | 32 |
| Isasi-Burdman | 20 November 2024 | 2091 | 34 | 7 | 15 | 14 | 2 | 4 | 21 | 21 | 19 |
| Opinión Lab | 12 November 2024 | 1800 | 34 | 24 | 11 | 7 | 3 | 3 | 7 | 10 | 10 |
| Pulso Research | 4–11 November 2024 | 2091 | 32.3 | 15.7 | 6.3 | 5.7 | 1.8 | 2.9 | 10.2 | 25 | 16.6 |
| Flxer | 5 November 2024 | 1790 | 34 | 33 | 3 | 7 | 2 | 5 | — | 14 | 1 |
| Poliarquía | October 2024 | — | 34 | 18 | 8 | 9 | 6 | 6 | 2 | 17 | 16 |
| Opina Argentina | 25 October 2024 | 1764 | 33 | 33 | 5 | 10 | 5 | 3 | 3 | 8 | Tie |
| DC Consultores | 22 October 2024 | — | 54.2 | 8.4 | 25.3 | 5.6 | 3.7 | 2.8 | — | — | 28.9 |
| Proyección Consultores | 16 October 2024 | 1822 | 27.2 | 20.5 | 14 | 8 | 5.7 | 3 | — | 21.6 | 6.7 |
| Isasi/Burdman | 12–17 October 2024 | 2057 | 28 | 9 | 16 | 13 | 4 | 4 | 3 | 23 | 12 |
| Pulso Research | 2–9 October 2024 | 2000 | 30 | 20.7 | 6.3 | 6.3 | 2.9 | 4.8 | 9.2 | 19.7 | 9.3 |
| Poliarquía | September 2024 | — | 35 | 16 | 12 | 10 | 4 | 4 | 1 | 19 | 19 |
| Pulso Research | 2–9 September 2024 | 2112 | 29.5 | 20.4 | 8.2 | 7.4 | 4.7 | 5.1 | 7.7 | 17 | 9.1 |
| Poliarquía | August 2024 | — | 39 | 13 | 5 | 13 | 2 | 5 | 1 | 21 | 26 |
| Lucas Romero | 8–14 August 2024 | 1186 | 30.9 | 15.8 | 22.2 | 9.4 | 3.6 | 4.7 | 2.2 | 11.2 | 8.7 |
| Pulso Research | 2–8 August 2024 | 2800 | 29.3 | 18.9 | 9.2 | 8.1 | 4.1 | 5.1 | 6.6 | 18.7 | 10.4 |
| Poliarquía | July 2024 | — | 36 | 15 | 8 | 14 | 3 | 5 | 2 | 18 | 21 |
| Pulso Research | 1–10 July 2024 | 2350 | 31.7 | 16.5 | 11.2 | 6.1 | 3.8 | 6.3 | 8.2 | 16.3 | 15.2 |
| Pulso Research | 1–10 June 2024 | 2661 | 33.5 | 18.6 | 8 | 5 | 4.7 | 5.3 | 5.4 | 19.5 | 14.9 |
| Opinión Lab | 3 June 2024 | 1538 | 37 | 17 | 13 | 7 | 3 | 4 | 8 | 12 | 20 |
| Pulso Research | 1–10 May 2024 | 2113 | 34.8 | 17 | 8.5 | 6.8 | 4.4 | 5.7 | — | 22.8 | 17.8 |
| Pulso Research | 4–15 April 2024 | 2014 | 31.7 | 15.1 | 12.1 | 5 | 5.3 | 6 | — | 24.8 | 16.6 |
| Pulso Research | 4–14 March 2024 | 1914 | 34.2 | 19.7 | 8.7 | 5.5 | 4.2 | 3.9 | — | 23.7 | 14.5 |