The following essay is, basically, expose theories which have given source to political transitions or the passage of the dictatorship to democracy. The question is, in general terms, how and why a system dictatorial evolves towards a democratic system...Are they necessary certain cultural, social, economic and political conditions in order that the evolution to produce the evolution towards democracy? In other words, is it possible to identify specific forms that allow us to predict the possibility of a transition to democracy? In this same vein, we must consider that transitions are possible only when there have been some definite steps: liberalization, democratization and consolidation, steps, of course vital to understand the corollary of political transitions. This is the framework that moves in this essay: show the positions and analysis presented by experts in the field and try to elucidate the characteristics of a possible consolidation, in terms of political scientists, will be the end of the democratization.