Overview

• The National Electoral Chamber has published the definitive roll, accessible via padron.gob.ar, Mi Argentina and the Vot-A WhatsApp chatbot (+54 9 11 2455-4444) to confirm school, table and order number.
• The 2025 vote marks the first nationwide use of the Boleta Única de Papel, which consolidates all lists on one sheet and replaces traditional party ballots and the closed voting booth.
• On election day, polling runs 08:00–18:00; voters present a DNI, receive a signed ballot and pen, mark one choice per category, fold to show the mesa signature, deposit the ballot, sign the roll and take the receipt.
• Congressional renewal includes 127 national deputies and 24 senators across eight districts, with Buenos Aires province electing 35 deputies due to its large electorate.
• Following the 2024 reform that eliminated PASO, anyone not on the definitive roll cannot be added for Oct. 26 and may only file a complaint for correction in future elections.