320 Politikwissenschaft
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In a democracy, a constitutional separation of powers between the executive and the assembly may be desirable, but the constitutional concentration of executive power in a single human being is not. The book defends this thesis and explores ‘semi-parliamentary government’ as an alternative to presidential government. Semi-parliamentarism avoids power concentration in one person by shifting the separation of powers into the democratic assembly. The executive becomes fused with only one part of the assembly, even though the other part has at least equal democratic legitimacy and robust veto power on ordinary legislation. The book identifies the Australian Commonwealth and Japan, as well as the Australian states of New South Wales, South Australia, Tasmania, Victoria, and Western Australia, as semi-parliamentary systems. Using data from 23 countries and 6 Australian states, it maps how parliamentary and semi-parliamentary systems balance competing visions of democracy; it analyzes patterns of electoral and party systems, cabinet formation, legislative coalition-building, and constitutional reforms; it systematically compares the semi-parliamentary and presidential separation of powers; and it develops new and innovative semi-parliamentary designs, some of which do not require two separate chambers.
The article analyses the type of bicameralism we find in Australia as
a distinct executive-legislative system – a hybrid between
parliamentary and presidential government – which we call ‘semi-
parliamentary government’. We argue that this hybrid presents an
important and underappreciated alternative to pure parliamentary
government as well as presidential forms of the power-separation,
and that it can achieve a certain balance between competing
models or visions of democracy. We specify theoretically how the
semi-parliamentary separation of powers contributes to the
balancing of democratic visions and propose a conceptual
framework for comparing democratic visions. We use this
framework to locate the Australian Commonwealth, all Australian
states and 22 advanced democratic nation-states on a two-
dimensional empirical map of democratic patterns for the period
from 1995 to 2015.