Complex sentence: Victoria has compulsory voting and uses a mandatory preferential ballot in single-member seats for elections to the lower house, the Legislative Assembly, and the single transferable vote in multi-member seats for elections to the upper house, the Legislative Council.
Split into simpler sentences: Victoria has compulsory voting and uses a mandatory preferential ballot in single-member seats for elections to the lower house, the Legislative Assembly. By contrast, the single transferable vote in multi-member districts is used for elections to the upper house, the Legislative Council.