The Comparative Constitutional Law and the search for a unique method of study

The aim is to verify whether there is a single method to carry out a study of comparative Constitutional Law. To answer the research problem and, using the deductive method, the article was divided into three chapters: (i) in the first one, it is verified how the Comparative Constitutional Law emerged and what are the main doctrinal controversies existing as a result of this practice; (ii) in the second, it demonstrates some of the existing research methods to carry out a comparative Constitutional study, more specifically: universalism, functionalist, contextualist and causal interference; (iii) in the third, it explains the reasons why it is not possible to have a single method to carry out this type of study. It is concluded that, due to the inherent specificities of the discipline under analysis -Constitutional Law -any comparative study will not be able to choose a single method.