La tesis doctoral que presento se enmarca en la discusion actual sobre la democracia y como se analiza su calidad, con la particularidad que se hace a nivel subnacional, lo cual resulta novedoso porque en esta clase de analisis ha primado el denominado sesgo nacional. Esta tesis discute este enfoque y propone una ruta de investigacion que consiste en examinar la calidad de la democracia a nivel subnacional, a partir de un estudio del rendimiento de las instituciones democraticas en los departamentos y regiones de Colombia, como una forma de evidenciar que la calidad democratica fluctua en el territorio de un Estado y que, por ende, el regimen politico no se presenta de forma homogenea, ni en territorios, ni en tiempo, lo cual evidencia, en parte, el proceso de democratizacion del regimen politico.Abstract: This doctoral thesis is framed in the current discussion on democracy and how its quality can be analyzed. However, its novelty resides on the particularity that the analysis is done on a subnational level, whereas in most studies in the field the so-called national bias has prevailed. This thesis disputes that approach and proposes a research path consisting on examining the quality of democracy on a subnational level by studying the performance of democratic institutions in each of Colombia’s departments and regions, showing that democratic quality can fluctuate within the territory of a State and that, therefore, the political regime is not homogeneous, neither in territories nor in time, which partly demonstrates the process of democratization of the political regime.