1920 Kalgoorlie by-election

1920 Kalgoorlie by-election

18 December 1920

First party Second party   Candidate George Foley Hugh Mahon Party Nationalist Labor Popular vote 8,382 7,939 Percentage 51.4% 48.6% Swing 3.5pp 3.5pp

MP before election Hugh Mahon Labor Elected MP George Foley Nationalist

A by-election was held for the Australian House of Representatives seat of Kalgoorlie on 18 December 1920. It was triggered by the expulsion from the House of Labor Party MP Hugh Mahon.

The subsequent by-election was won by Nationalist Party candidate George Foley. It was the only federal by-election at which the government had won a seat from the opposition until the 2023 Aston by-election over 102 years later. Voting was not compulsory in 1920.