This work aims to reflect on the contributions of Marxism to the development of political psychology. It is suggested that from this scenario emerges the political-legal domain of a dialogical type -antagonist complementary- and transdisciplinary. The reticular interaction between individual-society-species is posed in that territory, a place in which political psychology can be posed as a neo-discipline, oriented to the dialogue of knowledge under a multidimensional view. Political psychology is a relational-complex psychology, which implements a political-legal device to dialogically summon method, ideology and praxis.