Page "History of Colombia" Paragraph 20

Although the system established by the Sitges agreement was phased out by 1974, the 1886 Colombian constitution — in effect until 1991 — required that the losing political party be given adequate and equitable participation in the government which, according to many observers and later analysis, eventually resulted in some increase in corruption and legal relaxation.

The current 1991 constitution does not have that requirement, but subsequent administrations have tended to include members of opposition parties.