Story: Interest groups

Page 1. Aims and functions

All images & media in this story


Interest groups are formed to promote the interests or concerns of their members. They are primarily concerned with influencing public policy. Because a key function is to exert pressure on political decision-makers, interest groups are sometimes referred to as ‘pressure’ or ‘lobby’ groups. They are distinct from political parties in that they do not run candidates for political office. As well as targeting politicians, interest groups attempt to influence a wide range of public bodies, including government departments, state-owned enterprises and other Crown entities, and local government.


‘Lobbyist’ is an American term which derives from the practice of buttonholing politicians in the lobbies of Washington hotels. In New Zealand lobbyists go by a range of titles, including public-relations consultant, strategic advisor, corporate advisor and in-house ‘government relations’ manager.

As New Zealand’s population has grown and a more socially and politically diverse culture has emerged, the number of interest groups has increased. While the largest groups tend to be well resourced, with national offices and professional staff, most are sustained by small groups of unpaid volunteers whose primary motivation is their shared commitment to the group’s cause – anything from law and order to the environment. The internet and social-networking sites, the multiplication of radio and television news outlets and the transition to proportional parliamentary representation have made it easier for interest groups to have their voices heard.

With the growing diversification of New Zealand society both culturally and politically, the spread in the number and influence of interest groups is likely to continue.

Interest group functions

Interest groups carry out three basic functions: advocacy, policy formulation and membership support.


Advocacy includes scrutinising proposed legislation, making submissions to Parliament’s select committees, lobbying government ministers and their advisors, and seeking to influence public opinion.

Interest groups may resort to direct action by way of petitions, public submissions, demonstrations, pickets, and advertising and media campaigns. In some cases they may attempt to influence election outcomes, either by funding or endorsing a parliamentary candidate or party, or by deploying personnel to assist with the candidate’s campaign.

Policy formulation

Policy-making draws on the expertise of others outside the government. Well-resourced interest groups may be much better informed on particular policy issues than MPs, especially if they employ professionally trained policy advisors, researchers and consultants.

Membership support

Groups may provide members with material benefits and rewards, information and advice, and (sometimes with the help of social-networking sites such as Facebook and Twitter) access to the views of other members.

Boxing on

In the 2000s lobbyists sometimes offered corporate box seats at sports games to those they were attempting to influence. ‘Corporate boxes are not all about the rugby. They are places where the movers and shakers gather to flap their lips about issues of the day,’ wrote a journalist in 2011, in reference to ministers and their staff being offered corporate boxes by a bank seeking to retain a government contract.1


As the political capital, Wellington is the centre of the lobbying industry. For most of the 20th century many businesses had their head offices in Wellington to influence their particular industry’s regulation. Deregulation of the economy from the mid-1980s lessened the need to be in Wellington and most head offices moved to Auckland or overseas.

In 2011 some interest groups employed professional lobbyists as needed, such as Wellington lawyer Mai Chen. Others buttonholed ministers and officials in airport lounges such as Air New Zealand’s Koru Club. In 2006 former MP Richard Prebble suggested that this practice was so common that lobbyists ‘should be called korus’.2

Types of interest group

There are four main categories of interest groups in New Zealand:

  • economic, such as trade unions and business groups
  • cause, such as environmental and morals or values groups
  • consumer, such as consumer rights and welfare groups
  • community and recreational, such as aged and sporting groups.
  1. Tracy Watkins, ‘The rise and rise of lobbyists.’ Dominion Post, 4 June 2011, (last accessed 4 October 2011). Back
  2. Deborah Coddington, ‘Peddlers of steady buzz in corridors of power.’ New Zealand Herald, 14 May 2006, (last accessed 4 October 2011). Back
How to cite this page:

Raymond Miller, 'Interest groups - Aims and functions', Te Ara - the Encyclopedia of New Zealand, (accessed 10 April 2020)

Story by Raymond Miller, published 20 Jun 2012