Ivan Duque will be sworn in on August 7th 2018. Duque was elected President of Colombia on June 17, 2018 after defeating Gustavo Petro 54% to 42% in the second round. On May 27, 2018 he won the first round of the presidential election with over 39% of the vote.
Sources and Further Reading:
Colombia: President elect must strengthen state’s commitment to human rights, Amnesty International
Iván Duque wins election to become Colombia’s president
Multi-party coalition likely to support Colombian president-elect, supporting fiscal reform but tempering hostility to FARC peace accord