Overview
- The Cámara Nacional Electoral made the definitive padrón available on September 16, allowing online checks of school, address, mesa and order using DNI, gender, district and a verification code.
- Corrections to errors or omissions are accepted through September 26, and the campaign media window opens on September 21 under the official calendar.
- On the same date, the CNE began printing padrones and designated polling‑station authorities to prepare for the vote.
- The October 26 election will renew 127 seats in the Chamber of Deputies and 24 in the Senate, with the PASO primaries suspended for 2025 by law and decree.
- This cycle will introduce the Boleta Única de Papel nationwide for the first time, with tutorials and a simulator published to guide voters on the single paper ballot.