In cross-national research on party systems, the empirical units of analysis are often assumed to be self-evident, which can be conducive to misleading research results. This problem is particularly important with regard to party system classification, for which a methodologically rigorous approach to the units of analysis is needed. This article proposes a set of operational criteria for identifying elements that qualify for inclusion within the universe of democratic party systems among individual election outcomes and country-specific sequences of elections. On this basis, I introduce additional criteria for distinguishing between party systems and party non-systems, and among party systems evolving within the same nation-state settings. By applying these criteria to a set of 1502 national legislative elections held in the world’s democracies from 1792 to 2009, the article identifies 162 units that can be entered into a classification of the world’s democratic party systems and 21 party non-systems.

How do global sources of information such as mass media outlets, state propaganda, NGOs, and national party leadership affect aggregate behavior? Prior work on this question has insufficiently considered the complex interaction between social network and mass media influences on individual behavior. By explicitly modeling this interaction, I show that social network structure conditions media's impact. Empirical studies of media effects that fail to consider this risk bias. Further, social network interactions can amplify media bias, leading to large swings in aggregate behavior made more severe when individuals can select into media matching their preferences. Countervailing media outlets and social elites with unified preferences can mitigate the effect of bias; however, media outlets promulgating antistatus quo bias have an advantage. Theoretical results such as these generate numerous testable hypotheses; I provide guidelines for deriving and testing hypotheses from the model and discuss several such hypotheses.

Many theoretical and empirical accounts of representation argue that primary elections are a polarizing influence. Likewise, many reformers advocate opening party nominations to nonmembers as a way of increasing the number of moderate elected officials. Data and measurement constraints, however, have limited the range of empirical tests of this argument. We marry a unique new data set of state legislator ideal points to a detailed accounting of primary systems in the United States to gauge the effect of primary systems on polarization. We find that the openness of a primary election has little, if any, effect on the extremism of the politicians it produces.

Kriesi, H. (2013). Hans Daalder, State formation, parties and democracy: Studies in comparative European politics, reviewed by Hanspeter Kriesi. Party Politics, 19(2), 365–367. http://doi.org/10.1177/1354068812472763 Vai al sito web

Do parties with different ideological origins adjust their policies in response to the binding commitments that derive from the European integration process? This paper examines whether party platforms have adapted to the ideological content of EU treaty provisions – based on ‘neoliberalism’ and ‘regulated capitalism’ – across a range of policy areas The analysis builds on existing research which has examined how party families respond to the challenges and opportunities of the integration process. This is the first study that focuses on long-term party policy adjustment across different policy areas by examining whether there has been a shift away from core ideological goals towards the direction of EU policy. The main finding is that there has generally been a shift towards the direction of EU policy across all party families in both member and non-member states. The findings have implications for the quality of representation and functioning of democracy in the member states since the deepening of the European integration process reduces ideologically distinct policy alternatives across party families and can hinder policy innovation