It is not crucial for existence of a party state if there is a single-party or multiparty political system, but crucial is existence of such a political formation where political parties take monopolistic position regarding all other social and political subjects in a very wide variety of the total social life, therefore accomplishing a) monopoly on political representation b) dominant, almost monopolistic, influence on professional and social promotion of a person, c) dominant, almost monopolistic, influence on creation of public opinion, d) strong influence, regardless proclaimed principle of market economy, on economic-financial subjects and flows. Besides, existence of the ruling ideology basics around which there is a concordance among parties regardless program differences, as well as a significant influence of the police on political life and non-existence of the independent justice characterize party state. All other social subjects become dependant on political parties in some way, including the state whose authorities only formally conduct decisions that have already been made by parties. Membership in a political party is the main quality for social promotion of a person, but the number of political parties' registered members does not exceed 10% of total electoral body. Political process of partying that goes on in concrete historical conditions in concrete countries is the one that leads to the appearance of a party state. Party state leads to totalitarianism in conditions of single-partying, while in conditions of multi-partying it leads to spoiling of democracy, to essential limitation of civil freedoms and rights, to constituting of oligarchic power centers inside or in connection with political parties, to a system that would be best characterized as partycratic. It has been created in the Post-Fifth-October Serbia.