Argentine presidential candidate Mauricio Macri gestures at supporters at the party's headquarters in Buenos Aires on October 25, 2015. Buenos Aires Governor Daniel Scioli led Argentina's presidential election race as counting got under way Sunday, but it was unclear whether he would avoid a runoff against his conservative rival Mauricio Macri.  AFP PHOTO / EITAN ABRAMOVICH        (Photo credit should read EITAN ABRAMOVICH/AFP/Getty Images)
Argentine presidential candidate Mauricio Macri gestures at supporters at the party's headquarters in Buenos Aires on October 25, 2015. Buenos Aires Governor Daniel Scioli led Argentina's presidential election race as counting got under way Sunday, but it was unclear whether he would avoid a runoff against his conservative rival Mauricio Macri.  AFP PHOTO / EITAN ABRAMOVICH        (Photo credit should read EITAN ABRAMOVICH/AFP/Getty Images)

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    Euforia en la sede de campaña de Mauricio Macri

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Euforia en la sede de campaña de Mauricio Macri

En medio de una gran fiesta, Mauricio Macri agradece a sus colaboradores; lograron evitar que el candidato oficialista Daniel Scioli ganara en primera vuelta.

Euforia en la sede de campaña de Mauricio Macri

En medio de una gran fiesta, Mauricio Macri agradece a sus colaboradores; lograron evitar que el candidato oficialista Daniel Scioli ganara en primera vuelta.