Partisanship and principle: Voters and the New Zealand electoral referendum of 1993

Abstract. In a two–stage referendum process, in 1992 and 1993, New Zealand voters authorised a radical change from a plurality electoral system to proportional representation. Although ad hoc groups, not the major political parties, led the debate for and against the change, the nature of the issue ensured that partisanship had a strong effect on voters' choices. Yet many voters were also guided by their political principles and values, including fairness of representation on one side, and preference for single–party, decisive governments on the other. Experience of proportional representation since 1996 has resulted in a fairly high level of uncertainty toward electoral change, independent of partisanship. Values and partisanship, however, remain the two stabilising influences.