A by-election was held for the New South Wales Legislative Assembly electorate of Barwon on 16 November 1940 following the resignation of Ben Wade (), to contest the federal seat of Gwydir at the 1940 election, however he was unsuccessful.
Dates Date Event 16 August 1940 Ben Wade resigned. 21 September 1940 Federal election 16 October 1940 Writ of election issued by the Speaker of the Legislative Assembly. 25 October 1940 Nominations 16 November 1940 Polling day 29 November 1940 Return of writ Results
|- style="background-color:#E9E9E9" ! colspan="6" style="text-align:left;" |After distribution of preferences
Ben Wade () resigned to unsuccessfully contest the 1940 election for Gwydir. Preferences were not distributed to completion.
See also Electoral results for the district of Barwon List of New South Wales state by-elections
References