Factbox: Candidates in Colombia’s presidential election

(Reuters) – President Juan Manuel Santos and opposition challenger Oscar Ivan Zuluaga are in a tight race ahead of a second-round vote on June 15 for Colombia’s top job, in an election campaign being held against a backdrop of peace talks with Marxist rebels. JUAN MANUEL SANTOS As defense minister for former President Alvaro Uribe, Santos led a successful campaign against the Revolutionary Armed Forces of Colombia (FARC) rebels.