With over 99% of polling stations counted, Abelardo de la Espriella and Iván Cepeda lead the first-round results and will contest the presidency on June 21.
The National Civil Registry reported that Abelardo de la Espriella obtained 10.34 million votes, equivalent to 43.73%, while Iván Cepeda reached 9.67 million, or 40.91%. Neither exceeded the 50% plus one threshold needed to win outright.
The margin between the two stands at about 700,000 votes. Paloma Valencia finished third with 6.92% and Sergio Fajardo fourth with 4.25%.
The runoff is scheduled for June 21. Authorities stated there were no major public order incidents during the May 31 voting day.