Australia’s relatively wild island state, Tasmania, was described two decades ago as a crucible of environmental conflict, providing in microcosm ‘a taste of the likely shape of politics elsewhere in the world should the green agenda reach the political frontline’ (Hay and Haward 1988, p. 435). In the 25 years since the Greens were first represented in the Tasmanian parliament, the House of Assembly’s preferential proportional electoral system (Mackerras 1995)1 has ensured their consistent presence (see Table 1). Since then, they have supported two minority governments, one Labor (1989–91) and one Liberal (1996–8) (Crowley 2003a). A key issue dominating the 2006 state election was whether the Greens would again assume the balance o...