Overview

• Political parties completed and registered candidate lists on Aug. 17–18 for 127 Chamber of Deputies seats and 24 Senate slots, with figures like Patricia Bullrich and Itaí Hagman leading major slates in CABA.
• Buenos Aires province will hold its own legislative vote on Sept. 7, requiring many voters to cast two ballots before the national elections.
• The Cámara Nacional Electoral will publish the definitive padrón and assign polling-table authorities on Sept. 16, marking the formal start of the election calendar.
• The official audiovisual campaign for the Oct. 26 vote begins on Sept. 21 under the new single-paper ballot system.
• On Oct. 26 Argentina will renew half of its Chamber of Deputies and one-third of its Senate using the Boleta Única de Papel for the first time nationwide.