^ abThe incumbent Labor member for Londonderry, Jim Anderson, died on 22 March 2003, the day of the 2003 election. As he had been attempting to recontest his seat, there was no polling in the seat on election day. The resulting supplementary election was won by Labor candidate Allan Shearan on 31 May.
^ abcMarrickville Labor MLA and outgoing Deputy Premier Andrew Refshauge resigned on 10 August 2005. Labor candidate Carmel Tebbutt, the incumbent Minister for Education, won the resulting by-election on 17 September, successfully switching from the Legislative Council to the Legislative Assembly.
^ abHawkesbury MLA Steven Pringle resigned from the Liberal Party on 17 October 2006 after losing preselection to recontest his seat. He served out the remainder of his term as an independent.
^ abSwansea MLA Milton Orkopoulos was expelled from the Labor Party on 8 November 2006 after being charged with child sex offences. He subsequently resigned from parliament on 13 November under threat of expulsion, but no by-election was held due to the proximity of the 2007 election.
^ abMacquarie Fields MLA Steven Chaytor was expelled from the Labor Party on 19 January 2007 after being found guilty of domestic violence. He served out his term as an independent.
^ abNewcastle MLA Bryce Gaudry resigned from the Labor Party on 29 January 2007 after losing preselection to recontest his seat. He served out the remainder of his term as an independent.
^The changes to the composition of the house, in chronological order, were:
,[a]
McGrane died,[b]
Carr resigned,[c]
Refshauge resigned,[d]
Knowles resigned,[e]
Brogden resigned,[f]
Pringle sat as an independent,[g]
Orkopoulos resigned,[h]
Chaytor expelled from Labor,[i]
Gaudry sat as an independent,[j]