Australia has, mercifully, been spared from revolutionary changes of grundnorm or “rules of recognition”, with their consequential appeals to “necessity”, of the sort which have plagued courts in Pakistan, lJganda, Ghana, Nigeria, Zimbabwe, the Seychelles and Grenada, among others. But that has not meant that arguments based upon extra-constitutional powers and prohibitions have been absent from Australian constitutional jurisprudence. Human ingenuity being what it is, commentators and even judges, undaunted by the absence of a tenable constitutional argument, have occasionally resorted to extra-constitutional notions.
This paper explores the boundary between constitutional rules and principles and extra-constitutional political notions. That boundary is, of course, indistinct because the constitution includes implied powers and prohibitions. Hence, opinions will inevitably differ as to whether a particular power or prohibition is implied in the Constitution and, thus, is constitutionally conferred or imposed, or alternatively arises (if at all) extra-constitutionally.