Shutterstock Save for later Print Download Share LinkedIn Twitter The election of Sen. Gustavo Petro as Colombia's next president represents a sea change for a nation that has been run by right-wing politicians for much of its modern history. The left-leaning Petro, who previously served as a deputy in Colombia’s lower house of Congress and as mayor of its sprawling capital Bogota, ran on a platform of environmentalism — famously pledging to halt new oil and gas exploration — and social inclusion. But once in office, he may face limits to his room to maneuver.