In a controversial move recently, New Zealanders voted to introduce a new electoral system known as mixed member proportional (MMP). In 1996 the first election will be held under this system. Supporters of MMP claim that it will reduce the power of the cabinet, enhance the role and influence of Parliament, increase public consultation, more accurately represent the people's political preferences, and end the old adversarial style of politics. Critics, however, fear that it will create political uncertainty, governmental instability, policy paralysis and economic stagnation. New Zealand Under MMP assesses the long-term impact of these changes on New Zealand's political system. The authors consider how the party system could evolve, how governments will be formed, and what differences can be expected in the roles of cabinet and Parliament. Attention is also given to the implications of MMP for key groups of voters, as well as the consequences for the public service, pressure groups, and policymaking.