The complicated nature of Australian elections , including the single-member seats in the lower house , has a similar effect to first-past-the-post voting .
Australia uses single transferable vote as well and , though not strictly a two-party system , is dominated by a major party ( the Labor Party ) and a major coalition ( the Liberal/National coalition ) .While some would argue that a two-party outcome is not necessarily harmful ( see Two-party system ) , researchers and mathematicians have devoted considerable time to developing voting systems that do not appear to be subject to Duverger 's Law .
Duverger's law