By Sebastian Jimenez, Alessandra Freitas, Gonzalo Zegarra, CNN Bogota, Colombia (CNN) — In a surprisingly strong performance, right-wing outsider candidate Abelardo de la Espriella will face leftist candidate senator Iván Cepeda in a June runoff election to decide Colombia’s presidency, setting the stage for a battle over the country’s political future and the direction of its relationships with key international partners, including the United States.