In Central America and Colombia, the negotiated settlement of internal conflicts has gone hand in hand with democratization, and this has enabled the demobilization of guerrilla groups and their transformation into political parties. Moreover, the process of integrating the left is all the more unique in that these organizations have maintained radical positions. However, while these parties were temporarily characterized by their heritage of armed conflict and peace negotiations, it is their capacity to dissociate themselves from the context of transition that explains their success over time. In Guatemala, the party is undermined by its internal divisions. In Colombia, its success is limited to the Constituent Assembly. In El Salvador, by contrast, the FMLN has consolidated over time and reaped substantial electoral benefits.