The Australian Electoral System provides the first-ever comprehensive study of the design of Australian electoral systems. It focuses on the two electoral systems, both 'preferential', that are most closely associated with Australia: namely the alternative vote and the single transferable vote. The book covers four main themes. First, it traces the origins of Australia's electoral systems, explaining how and why Australia ended up with such a relatively unique arrangement. Second, it explores the range of variation in the detail of how the various schemes operate - variations which can have significant behavioural and electoral consequences. Third, it uses aggregate and survey data to systematically analyse the consequences of electoral system design. Fourth, it examines voter reaction to these systems, both in Australia and also cross-nationally.