High Quality Content by WIKIPEDIA articles! The Chilean transition to democracy began when a Constitution establishing a transition itinerary was approved in a plebiscite. From 11 March 1981 to 11 March 1990, several organic constitutional laws were approved leading to the final restoration of democracy. After the 1988 plebiscite, the 1980 Constitution, still in force today, was amended to ease provisions for future amendments to the constitution, create more seats in the senate, diminish the role of the National Security Council and equalize the number of civilian and military members (four members each).