What Is Executive Power?
1 What is Executive Power? I Introduction In the 1988 case of Davis v Commonwealth, Mason J said of executive power that it is potentially very broad yet ‘its scope [is not] amenable to exhaustive definition.’1 Executive power is a power with significant content but ill-defined limits. It is not the particular power of lawmaking, or of determining disputes but, rather, the general power to carry out all the other functions of government. In the Westminster tradition, all governmental power derived originally from the Crown2 and independent legislative3 and judicial4 functions were a subsequent development. The Coronation Charter of Henry I, the immediate successor to William I and, therefore, the first postconquest king to have a coronation as such, illustrates the breadth of the original power of the Crown (the following excerpts indicating executive, judicial and legislative power respectively): 1 Davis v Commonwealth (1988) 166 CLR 79, 93. 2 Magna Carta 1215 (Imp); NSW v Commonwealth (1975) 135 CLR 337, 480, 487–91 (‘Seas and Submerged Lands Case’) (Jacobs J); J H Baker, An Introduction to English Legal History, (Butterworths, 2nd ed, 1979) 12–15; John Gillingham, ‘The Early Middle Ages 1066–1290’ in Kenneth Morgan (ed), The Oxford Illustrated History of Britain (Oxford University Press, 1984), 104; Elizabeth Wicks, The Evolution of a Constitution: Eight Key Moments in British Constitutional History(Hart, 2006) 3–6; cf Australian Capital Television Pty Ltd v Commonwealth (1992) 177 CLR 106, 137–8 Mason CJ discussing ‘sovereign power which resides in the people’ by virtue of the mechanism for constitutional amendment being a referendum under s 128 of the Constitution.
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