A ustralia's major political parties have generally been held to be private associations of political activists who freely determine their own activities. As such, they should not be subjected to government regulation. The scrutiny of their behaviour is a matter for their members and the electorate should only assess the parties' public performance. However, and more recently, the parties have developed into professional machines with head offices and organisers, and they receive funds from the taxpayer and from sources other than their members. In these regards, the parties have a degree of freedom from the membership by way of professional advice and non-member sources of funds. Furthermore, the parties' status has changed to the point where their historyideological, a large membership presence in the electorate and self-supportingbelies their current role. The present parties are brand names with a nominal membership presence in the electorate, where the market for political activism has shifted to interest groups and where they are heavily supported by the state. For example, Gary Gray (1997), the former national Secretary of the Australian Labor Party, estimates a third of all funds available to the ALP comes from taxpayers. The new status of registered political parties is semi-public. Ideally, then, they should be beholden to the public, both electorally and in a more direct proprietorial way, as well as to their membership. The issue is to decide the regulatory mix that would preserve free political association and satisfy the taxpayer's investment.The way these questions are addressed depends on the extent to which the party system relies on public trust. For example, the British parties are subject to a minor degree of regulation and almost no scrutiny. This is because the argument that parties 'are an essential part of civic society and the state should be kept at a distance' (Seyd, 1988:204), has won the day. The sentiment was elegantly put in a report (Houghton, 1976:75) on public funding, 'we think it mistaken and possibly dangerous to suggest that any work can be required of a political party-by the State, by Parliament or by anyone other than its members'. Further, '(d)irect state aid would breach the established British constitutional practice that organisation for political ends is a strictly voluntary activity' (Houghton, 1976:78). It appears that British political life will remain 'based strongly on trust' (Oliver, 1997:543). Is Australian political life, specifically those parts run by the parties, based strongly on trust? Do the voters trust the competition between the parties as a sufficient form of regulation or do they require as well, scrutiny of the internal operations of the parties?