||The article deals with methodology of scientific research in the field of constitutional law. Carrying out any scientific research requires applying appropriate methodology. Correct application of particular science methodology allows scientists to develop necessary level of knowledge on a phenomenon. Moreover, the methodology allows scientists to offer their own conclusions regarding the questions at issue. Methodology is the doctrine of real organized system of scientific methods that can and should be applied by researchers as well as principles which the latter must adhere to in their research activities. Research method is a journey (part of activities) for the researchers to have in their scientific work, as well as a principle, i. e. a requirement for the progress or its limits. The system of scientific methods includes five basic methods: epistemological, logical, heuristic, communicative and forecasting.