Party Interests,Public Opinion and Institutional Preferences: Electoral System Change in New Zealand

Explanations of the origins of electoral systems tend to rely heavily on rational choice assumptions: essentially the common sense inference that political parties prefer electoral arrangements that promote their interests. Accounts of electoral system change in New Zealand support either a partisan interest interpretation on the basis of survey evidence from voters, or point to other deeper causes in historical, institutional and cultural phenomena. Using survey data from the 1993 referendum, covering both voters and political party elites, we seek to reconcile these approaches by establishing the limits of the party interest approach. We construct an argument which also stresses the effects of cultural and institutional variables-most notably, many New Zealanders' frustrated expectations that governments be accountable between elections as well as on election day, and their hopes that multi-party government may facilitate such accountability.