A wall with an image of Colombian left-wing vice-presidential candidate Francia Marquez and Colombian left-wing presidential candidate Gustavo Petro is pictured one day before the first round of the presidential election, in Cali, Colombia May 28, 2022. Reuters/Luisa Gonzalez

Colombians head to polls in divisive presidential election

They will choose a new president from among a former rebel promising social programmes, an eccentric business magnate and another who warns against a leftist economic model