Abelardo de la Espriella and Iván Cepeda are the key candidates in the crucial Colombian presidential election.
The campaign is marked by de la Espriella's hardline security proposals and an endorsement from Donald Trump.
Concerns have been raised regarding de la Espriella's US citizenship and potential implications for Colombian sovereignty.
The election represents a significant test for Colombian democracy amidst debates over crime, security, and national policy.