A by-election was held for the New South Wales Legislative Assembly electorate of Smithfield on 23 June 1990 because of the resignation of Janice Crosio () to successfully contest the 1990 federal election for Prospect.
The Smithfield by-election was held the same day as the Heffron and Granville by-elections.
Dates Date Event 17 February 1990 Resignation of Janice Crosio. 24 March 1990 1990 federal election 25 May 1990 Writ of election issued by the Speaker of the Legislative Assembly and close of electoral rolls. 1 June 1990 Nominations 23 June 1990 Polling day 2 August 1990 Return of writ
Results
Janice Crosio () resigned.
See also Electoral results for the district of Smithfield List of New South Wales state by-elections
Notes
References