website (National Library) (Macquarie
History of Political Philosophy
History of Medieval philosophy
British Academy website (edition of William of Ockham, Dialogus)
The Australian Liberal Party has always had a pretty clear idea of what it stands for, though the terminology varies: "Free enterprise", "Private enterprise", or "The market society". Their basic belief is that whatever comes legally to people through the market cannot justly be taken from them except for certain limited purposes (e.g. defence, a "safety net"). The legitimate purposes do not include any project to redistribute wealth according to some other conception of justice. Supporters of the Labor Party, on the other hand, note that much of what comes to people through the market is some kind of rent, on which the community has a claim for any purpose the community reasonably considers appropriate. This disagreement is the main topic of The Philosophy of Free Enterprise: For and Against.
Many Labor Party members are attracted by the theory of justice developed by John Rawls. This is the subject of a reading guide and three lectures (here, here and here). In my opinion Rawls's theory does not stand up well to criticism. In fact I have become sceptical on the usefulness of the idea of justice in politics; see Some reflections.
Other topics: Adam Smith (here); Marx and Historical Materialism (here, here); Weber on bureaucracy and capitalism (here, here); Josef Schumpeter, Capitalism, Socialism and Democracy (here) For a very telling critique of the pre-WWI German Social Democratic Party, with clear application to the ALP, see Roberto Michels, Political Parties (here).
Religious issues often arise in Australian politics. See Philosophy and Religion, Religion and Politics, Separation of Church and State.
"Medieval" is generally a term of abuse, but in fact modern civilisation is continuous with medieval civilisation--Universities, Parliament, and the rule of Law are medieval institutions that are still fundamental. My research and teaching includes studies of medieval political thought and medieval philosophy. See Introduction to medieval philosophy, Medieval political philosophy, Medieval theories of natural law, The medieval concept of heresy, William of Ockham's Dialogus (a discussion of church-state relations, among other matters--Ockham argues, for example, that the clergy are subject to the secular courts).
Ockham's text is a work of art, of the art of reasoning. Text editing is like the work of a curator in an art gallery--reading the surviving manuscripts and correcting damage done over the years (e.g. through successive copying), making the text accessible (e.g by translation), offering interpretation. See here, here, here and here.
See also Politics.