Left-wing presidential candidate Gustavo Petro has made it to the second round of Colombia’s elections. In a surprising twist, he will be joined in the runoff by populist businessman Rodolfo Hernández, who pulled off a strong second-place showing. Hernández’s success represents a major setback for Petro, who must now convince voters that he represents the change they desire.

In recent weeks, construction magnate Hernández, often nicknamed “Colombia’s Trump,” has made a surprise surge in the polls indicating that he may be headed to second place, beating the more moderate right-winger Federico “Fico” Gutiérrez.

With most results in by late Sunday night, Hernández garnered an astonishing 28 percent of the vote. As predicted by the polls, leftist and former guerrilla Gustavo Petro won more than 40 percent of the vote. Given that most of Fico’s supporters, 24 percent of the voters, will back Hernández in the June 19 runoff, Petro who was anticipated to win the presidency comfortably, now faces a troublesome uphill struggle.