^Ordinarily the writ for a by-election would be issued by the Speaker of the Legislative Assembly, however the position of speaker was vacant since the resignation of John Cohen on 30 January 1919 and the writ was issued by the Governor.
^Estimate based on a roll of 12,842 at the 1917 election.[4]
References
^ a b"Mr Lawrence Joseph O'Hara (1889–1919)". Former members of the Parliament of New South Wales. Retrieved 7 May 2019.