The election pendulum ranks the 150 electorates in the House of Representatives won by each party on a two-party-preferred basis.
The pendulum is based on the 1998 election results in Victoria, Queensland, South Australia, Tasmania and the ACT. In New South Wales, Western Australia and the Northern Territory, redistributions have taken place, so the margins have been derived from the new boundaries.
Two additional seats have been created for this election. In Western Australia, the new electorate of Hasluck is notionally ALP. The Northern Territory electorate has been divided in two, notionally creating one ALP seat (Lingiari) and one CLP seat (Solomon).