Juan Gerardo Guaidó Márquez was born in 1983, in La Guaira, Venezuela. He is a member of the social-democratic party Vontade Popular and a member of Parliament elected by the state of Vargas. In 2018 he became the youngest President of the National Assembly of the Bolivarian Republic of Venezuela.
He was sworn in as Interim President of Venezuela in January 2019, after the National Assembly and the Supreme Court (exiled in Panama) declared void the presidential election that re-elected Nicolas Maduro. Both the National Assembly and the Court invoked article 233 of the Constitution of Venezuela, stating that the electoral process had not been free, just, transparent or duly monitored.
Immediately after taking office, Nicolás Maduro imposed on Juan Guaidó a series of legal, political, and security measures.
Fifty-four countries have recognized Guaidó as Interim President of the Republic. He proposed an economic recovery plan for the country called Plano País and has appointed ambassadors in several countries, including Portugal.