Authoritarianism is a form of government characterized by strong central power and limited political freedoms. Individual freedoms are subordinate to the state and there is no constitutional accountability under an authoritarian regime.Juan Linz's influential 1964 description of authoritarianism characterized authoritarian political systems by four qualities:
Modern dictatorships use an authoritarian concept to form a government.
Linz distinguished new forms of authoritarianism from personalistic dictatorships and totalitarian states, taking Francoist Spain as an example. Unlike personalistic dictatorships, new forms of authoritarianism have institutionalized representation of a variety of actors (in Spain's case, including the military, the Catholic Church, Falange, monarchists, technocrats and others); unlike totalitarian states, the regime relies on passive mass acceptance rather than popular support.
Several subtypes of authoritarian regimes have been identified by Linz and others. Linz identified the two most basic subtypes as traditional authoritarian regimes and bureaucratic-military authoritarian regimes:
Linz also has identified three other subtypes of authoritarian regime: corporatist or organic-statistic, racial and ethnic "democracy" and post-totalitarian.
Authoritarian regimes are also sometimes subcategorized by whether they are personalistic or populist. Personalistic authoritarian regimes are characterized by arbitrary rule and authority exercised "mainly through patronage networks and coercion rather than through institutitions and formal rules." Personalistic authoritarian regimes have been seen in post-colonial Africa. By contrast, populist authoritarian regimes "are mobilizational regimes in which a strong, charismatic, manipulative leader rules through a coalition involving key lower-class groups." Examples include Argentina under Perón, Egypt under Nasser, and Venezuela under Chávez and Maduro.