Argentina has a new president.
Alberto Fernández, a centre-left candidate, upstaged the incumbent Mauricio Macri in an election that was dominated by concerns about the economy.
Throngs of excited supporters gathered outside the campaign headquarters of Mr Fernandez to celebrate the victory.
The upset victory came amid a grinding economic crisis that has reportedly consigned over a third of the Argentine population to a life of poverty.
The International Monetary Fund (IMF) had predicted that the Argentine gross domestic product (GDP) would shrink by 1.2%.
Mauricio Macri conceded defeat after it became apparent that he had lost the vote and said that he had called his opponent to congratulate him on his victory.
"I congratulated Fernandez and invited him to talk so that we could have an organized transition. The important thing is the future of all Argentinians, " Mr Macri said .
Voter turnout was impressive, 80.8% according to statistics provided by the National Election Directorate.
Fernandez accepted Macri's offer of having a meeting to discuss the future.
"And of course we will collaborate in everything we can because the only thing that we will focus on is to stop the suffering of all Argentinians," Fernandez said.
"We are going to be the Argentina we deserve to be, " he added.
Fernandez run on a ticket with former president Christina De Kirchner.