At the federal election, people vote for a candidate in the lower house and party or candidate for the upper house. The party with the majority of seats in the lower house forms government.

The upper house (or senate) seats are allocated to parties based on proportion of total votes by state. My understanding is that wikileaks is hoping for a seat in the upper house as do most minor parties is Australia. So the government needs to negotiate with the minor parties for legislation to pass the upper house.