Party Non-Systems

This article makes a case for expansion of the conceptual framework for the classification of party universe types. In particular, it introduces the concept of ‘party non-systems’, defined as those party universes characterized by a fundamental absence of inter-temporal continuity in the identity of the main parties. At the heart of this concept is the explicit differentiation between intra- and extra-systemic volatility. Party non-systems are characterized by persistently high transfers of votes away from the main parties towards new and small parties (i.e. high extra-systemic volatility), an ever-changing constellation of parties without a stable ‘core’. It is argued that the difference between non-systems and all other party universe types is not only one of degree (in level of institutionalization), but also one of kind. This conceptual innovation is then applied to a number of Latin American cases (Guatemala, Ecuador, Peru and Bolivia) at the low end of the institutionalization continuum to highlight important cross-country and inter-temporal differences in the nature of (core) party competition.