This chapter focuses on Sartori’s analysis of democratic regimes. Sartori took a complex approach to democratic regimes and considered the crucial factors of a regime to be its given configuration of institutions and its electoral and party systems. These components together form a complex whole, and how they are arranged, related, and depend on each other determines how individual democratic regimes differ from each other in a typological sense and, above all, influences how they function in practice. Sartori did not share the common enthusiasm for consensual and proportional politics. He did not believe that the consensual model of democracy (e.g., a proportional electoral system or a parliamentary regime) is under all circumstances better than the majoritarian model of democracy (e.g., a majoritarian electoral system or a presidential regime), which was the view held by Arend Lijphart, with whom Sartori engaged in a fierce debate. Generally, Sartori favoured ‘mixed’ forms (a semi-presidential regime). He even proposed his own altogether original system, ‘alternating presidentialism,’ which is a combination of parliamentarism and presidentialism. It always depends, however, on the given context. One type of arrangement works better in certain conditions and another in others. No one model is the best and the right one for every country.