[1] It was triggered as a result of the resignation of former Premier of Western Australia Alan Carpenter.
They were as follows in ballot paper order:[3] Christian Democratic Party – Henri Chew.
Chew stood previously as the Christian Democrats candidate for the district of Carine at the 2008 state election.
Tinley is a former SAS major who stood unsuccessfully as the endorsed Labor candidate for the marginal seat of Stirling at the 2007 federal election.
Georgatos was originally preselected as the Greens candidate in anticipation of a potential by-election in Willagee earlier in the year.