A supporter of presidential candidate Alberto Fernandez holds up a handkerchief with photos of him and his running-mate, former President Cristina Fernandez, outside the "Frente de Todos" party headquarters after primary elections in Buenos Aires, Argentina, Sunday, Aug. 11, 2019. The "Frente de Todos" presidential ticket emerged as the strongest vote-getter in Argentina's primary elections Sunday, indicating conservative President Mauricio Macri will face an uphill battle going into general elections in October.(AP Photo/Tomas F. Cuesta)