The official results represent the first and most critical fall of PRO in the City after two decades. Its first victory in CABA dates back to 2005, when Marcos Peña managed to prevail in the legislative elections as part of the ticket headed by Mauricio Macri for national deputy. Two years later, in 2007, PRO took over the Buenos Aires Government Headquarters, a position it has held for 18 uninterrupted years.













