The relationship between Javier Milei's La Libertad Avanza and Mauricio Macri's PRO party varies significantly across different regions in Argentina. They have been allies in Entre Ríos, partners in both the defeat of September and the victory of October in the Province, but have turned into fierce rivals in the City. Legislative cooperation has been overshadowed by mutual accusations and legal hints, adjusting their strategies as they eye the upcoming 2027 elections and the politics of the Capital.

The last notable interaction between the two leaders occurred on October 31, when Macri learned of Manuel Adorni's appointment as Milei’s finance minister, which caused some tension. Recently, Macri has received positive signals from Milei's government, suggesting a potential for a pragmatic cooperation despite looming uncertainties. In the last three days, Macri has been encouraged by favorable developments originating from the Casa Rosada that could influence their relationship, at least temporarily.

A recent decision by Milei to withdraw State attorneys from an investigation related to a $57 billion IMF loan secured during Macri's administration has raised eyebrows. This move, while perceived as beneficial to Macri, is indicative of the precarious balance of power and the complex political maneuvers at play. As both political figures navigate their competition for control over the Capital in the lead-up to the elections, their strategies will be closely watched for signs of collaboration or conflict.