Frontrunner Abelardo de la Espriella has vowed to return to full-scale military confrontation with armed groups

Far-right Abelardo de la Espriella and leftist Ivan Cepeda compete for the presidency on starkly different platforms.

On Sunday, Colombians will choose between human rights activist Ivan Cepeda, who would continue a more liberal agenda, or entrepreneur Abelardo de la Espriella, who promises a…