Electoral Reform as an Engine of Party System Change in Italy

Abstract

After more than forty years of proportional representation, in 1991 Italy embarked on a period of electoral law revision. The ongoing debate about how to engineer an electoral system capable of producing the preferred political outcomes stands out against the stasis in constitutional reform, most recently demonstrated in the rejection by popular referendum of Matteo Renzi’s package of reforms. The extent to which the different electoral reforms have had an impact on Italian politics, especially following the 2005 electoral legislation, can be evaluated by analysing the changing Italian party system over the past decade and beyond in terms of its morphology, dynamics, and party/parliamentary group switching. The 2005 electoral reform has had a clear effect on Italian politics and on the party system, but that effect is unlikely to endure given the highly controversial new electoral law that came into force in 2017.

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