You are confusing First Past the Post with Single Member Electorates. At the most recent House election, 12 electorates were won by the candidate that was in s

You are confusing First Past the Post with Single Member Electorates. At the most recent House election, 12 electorates were won by the candidate that was in second-place based on the first preferences (ie, the result differed from that under FPTP). Interestingly the Greens' seat was not one of these - Bandt lead on the first preferences and would have won under FPTP. Single Member Electorates will often lead to overall non-proportional outcomes.