Opposition presidential candidate Mauricio Macri waves to supporters before voting during a runoff election in Buenos Aires on Nov. 22, 2015.

Natacha Pisarenko—AP

Opposition presidential candidate Mauricio Macri waves to supporters before voting during a runoff election in Buenos Aires on Nov. 22, 2015.

Opposition presidential candidate Mauricio Macri waves to supporters before voting during a runoff election in Buenos Aires on Nov. 22, 2015.

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