Preferences required, Preferences counted to completion
Candidate
Party
Votes
%
Final
%
Campbell, Harold Edward Ostler
Country Party
5,278
39.57
5,439
40.78
Renshaw, John Brophy (Elected)
Labor Party
6,563
49.21
7,899
59.22
Smithers, John Norman
Ind Labor
1,497
11.22
Formal Votes
13,338
Informal Votes
185
1.37
Total Votes / Turnout
13,523
91.19
Notes: According to Clunes' study of the 1941 election, sitting Country Party MP A.W.Yeo complained the new boundaries had turned Castlereagh into a Labor seat and so chose to contest the electorate of Liverpool Plains.
Corrections: Hughes and Graham (1975) list Smithers as an Independent. Clunes' study of the 1941 election states that an Indepdnent Labor candidate contested Castlereagh, and with 90% of Smithers' preferences flowing to Labor, he has been listed here as an Independent Labor candidate.