A by-election was held for the New South Wales Legislative Assembly electorate of Ashfield on 5 October 1929 because of the resignation of Milton Jarvie (Nationalist).
[1] Sir Colin Davidson, a Judge of the Supreme Court, was appointed to conduct a Royal Commission to investigate whether there were attempts at bribery with an application for a Campsie bus service.
[2] On 7 June 1929 the Royal Commission reported its findings, including that Jarvie had attempted to bribe Albert Bruntnell who was the Chief Secretary.
[3] Jarvie was charged with criminal offences, however on 1 July 1929 he was found not guilty.
[4] Jarvie nonetheless resigned so that the electors of Ashfield could return him with an overwhelming majority.