Gustavo Petro, right, Colombia Humana presidential candidate, shakes hands with supporters during a campaign rally in Bogotá, Colombia, on Friday, June 8, 2018. Petro will face Ivan Duque, presidential candidate for the Democratic Center, in a runoff election on Sunday, June 17.
Gustavo Petro, right, Colombia Humana presidential candidate, shakes hands with supporters during a campaign rally in Bogotá, Colombia, on Friday, June 8, 2018. Petro will face Ivan Duque, presidential candidate for the Democratic Center, in a runoff election on Sunday, June 17. Fernando Vergara AP
Gustavo Petro, right, Colombia Humana presidential candidate, shakes hands with supporters during a campaign rally in Bogotá, Colombia, on Friday, June 8, 2018. Petro will face Ivan Duque, presidential candidate for the Democratic Center, in a runoff election on Sunday, June 17. Fernando Vergara AP