After the murder of presidential candidate Luis Carlos Galán in August 1989, students started a movement calling for a referendum "for peace and democracy" to be held on 21 January 1990.
The students then set up the "We can still save Colombia" movement, which called for a referendum alongside the general elections on 11 March 1990 on establishing a Constitutional Assembly.
However, new President César Gaviria chose to reinforce the legitimacy of the Assembly by holding a second referendum on its election.
[4] The Assembly was elected by proportional representation in a single nationwide constituency.
[6] Following the elections, four seats were given to guerrilla groups; two to the Popular Liberation Army, one to the Movimiento Armado Quintin Lame and one to the Workers Revolutionary Party.