Universidad Javeriana, Universidad de los Andes), proposed the formation of a constituent assembly. In 1989, the movement had gathered over 30,000 signatures for an unsuccessful petition asking the president to convene a plebiscite to reform the constitution. Some months later, the students promoted the so-called séptima papeleta, or 'seventh ballot paper', as an unofficial plebiscite for a constituent assembly to be held alongside the March 1990 legislative election. The name séptima papeleta meant to indicate that the unofficial ballot for a constituent assembly would be in addition to the six other official ballot papers (senators, representatives, departmental assemblies, mayors, municipal councils and the Liberal presidential primary). The séptima papeleta was the brainchild of Fernando Carillo, a young Harvard graduate and constitutional lawyer, who at the time was teaching law in Bogotá's three main private universities. In February 1990, Carrillo published an article in El Tiempo, the first to use the term séptima papeleta and explaining the objectives of his idea. Carrillo argued that the unofficial vote would "create a political fact" and "set the record that public opinion wants a constituent assembly", while the expression of popular sovereignty would keep the courts from invalidating it. Carrillo's idea immediately received substantial support from the political and media elites of the country. El Tiempo, Colombia's largest newspaper, enthusiastically supported the movement and later provided some of the material support necessary to print the ballots. Liberal presidential candidate César Gaviria supported the idea and was the first presidential contender to speak about it publicly. Former President López Michelsen supported the idea, and further proposed that the government issue a state of siege decree ordering the official counting of the seventh ballot papers. On 10 March, a day before the election, President Barco gave his personal support to the séptima papeleta. Most Liberal factions also supported the séptima papeleta, with the only significant Liberal opposition coming from former president Turbay and Liberal presidential candidate Hernando Durán Dussán. Álvaro Gómez Hurtado, leader of the conservative National Salvation Movement (MSN), initially opposed constitutional reform. The strongest support for the séptima papeleta came from the legal left-wing parties, the UP and the new AD M-19. The FARC, for their part, proposed an entirely new constitution written by a constituent assembly, which would be convened by a plebiscite. The idea of the séptima papeleta was similar to the conclusions of a 1988 government report prepared by Manuel José