From its origin in ancient Greece, from the 5th century B.C., to the present day, democracy, as a theoretical concept and political regime, has been extensively discussed. However, authors always differ as to the development and validity of the arguments that underlie this theme and, although it is possible to find authors that think alike, there is no absolute consensus on this topic. Thus, in order to provide a solid ground of knowledge that will enable you to critically reflect on what constitutes the basis of democracy, this book invites you to search how democratic governments are formed and how they function, guiding you through the normative models that support what in many perspectives is considered a true democracy.