Abstract:Despite the large body of literature on the emergence and success of new political parties in Western Europe, few, if any, attention has been paid to investigate new parties from a systemic perspective, therefore exploring their potential effects on party systems. This article focuses on Party System Innovation (PSInn), defined as the aggregate level of 'newness' recorded in a party system at a given election. After having reviewed the extant literature on the topic, the article discusses what a new party is a… Show more
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