A by-election was held for the New South Wales Legislative Assembly electorate of Coogee on 8 May 1948 because of the death of Lou Cunningham (Labor). The Labor candidate was his widow Catherine.
|23 March 1948||Lou Cunningham died.|
|12 April 1948||Writ of election issued by the Speaker of the Legislative Assembly.|
|20 April 1948||Nominations|
|8 May 1948||Polling day|
|4 June 1948||Return of writ|
|Total formal votes||21,812||97.37|
|Liberal gain from Labor||Swing||+2.35|
- "Mr Lucien Lawrence Cunningham (1889-1948)". Former members of the Parliament of New South Wales. Retrieved 11 October 2019.
- Green, Antony. "1948 Coogee by-election". New South Wales Election Results 1856-2007. Parliament of New South Wales. Retrieved 18 October 2019.
- "Writ of election: Coogee". New South Wales Government Gazette. No. 40. 15 April 1948. p. 889. Retrieved 18 October 2019 – via Trove.