FORMER guerilla leader Rodrigo Londono, known widely as Timochenko, has vowed not to give up his presidential election campaign run in favour of former Bogota mayor Gustavo Petro.

Timochenko, who led the Farc liberation movement and heads a political party with the same acronym, has suffered verbal and physical abuse during campaigning.

Over 50 members of his Revolutionary Alternative Force for the Commons have been assassinated by far-right death squads.