Thanks to preferential voting, Australian House of Representatives members are each elected by an absolute majority of the voters in the electorate they represent.
Greens leader Richard Di Natale will be hoping to snatch seats from the major parties in Saturday’s election.
AAP/Julian Smith
With this election likely to produce a high number of non-major-party primary votes, the Greens have emerged as a strong third option and a headache for both Labor and the Coalition.
Australia uses a method known as preferential voting to elect the House of Representatives.
Mick Tsikas/AAP
At federal elections, voters must cast a preference for all candidates in their lower house seat. Failure to do so, or failure to give an ordinal list of preferences, renders the ballot informal.
Greens leader Richard Di Natale (right) and Greens candidate for Grayndler Jim Casey are eyeing off the inner-Sydney seat.
AAP/Paul Miller
With the election result almost certain to be close, preferencing will play a key role, leaving the progressive parties in particular in a difficult bind.