Lower house At the
2008 election, Labor won 28 seats, the Liberals won 24 seats, the Nationals won four seats, with three seats won by independents. Three changes have occurred since; the
Greens won the seat of
Fremantle off Labor at the
2009 by-election,
Vince Catania in the seat of
North West defected from Labor to the Nationals in July 2009, and Fremantle MP
Adele Carles resigned from the Greens in 2010, leaving Labor with 26 seats, the Liberals with 24 seats, the Nationals with five seats, while independents hold four seats. Boundary changes took effect at this election. The only changes to the notional 2008 results were that the seat of
Morley shifted from Liberal to Labor and the seat of North West (renamed
North West Central) shifted from Labor to National.
Upper house At the
2008 election, the Liberals won 16 seats, Labor won 11 seats, the Nationals won five seats, and the Greens won four seats. ==Retiring MPs==