Steve Bracks Labor Wade Noonan Labor The 2007 Williamstown state by-election was held on 15 September 2007 to elect the next member for Williamstown in the Victorian Legislative Assembly, following the resignation of sitting MP and former premier Steve Bracks on 30 July 2007.

Bracks had held the seat since 1994, and had been leader of the state Labor Party since 1999, serving as Premier from 1999 to 2007.

With the resignation of Premier Steve Bracks on 30 July 2007, a by-election was required.

[1] This left Janet Rice as the person most likely to displace an ALP candidate, although she would need to greatly improve upon the vote that the Greens received in the 2006 state election.

Former Transport Workers Union of Australia assistant secretary Wade Noonan held the seat for Labor.