The first-round result decides which two candidates advance to the runoff and narrows policy choices for Colombia's next administration.
A surprise frontrunner can reshape coalition bargaining, congressional alignments, and investor confidence before the second round.
Vicky Dávila, Luis Gilberto Murillo, Claudia López, David Luna, and Juan Daniel Oviedo headline a crowded field.
Also in contention are Sergio Fajardo, Germán Vargas Lleras, Paloma Valencia, Iván Cepeda, Roy Barreras, Daniel Quintero, Juan Carlos Pinzón, Gustavo Bolívar, Abelardo de la Espriella, Mauricio Cárdenas, and Enrique Peñalosa.
Poll swings, regional turnout patterns, and the distribution of undecided voters will shift who looks likely to finish first.
Debate performances, cross-party endorsements, security incidents, economic indicators, and rapid campaign spending in key departments are the main causal levers.
Official election day results, the first rapid-count releases, and department-level turnout figures will clarify front-runner status on night one.
Watch late-stage opinion polls, televised debates, major endorsements, and any judicial rulings or security events in Bogotá, Antioquia, Valle, and the Caribbean coast over the next weeks.