The 1951 by-election for the Australian House of Representatives seat of Macquarie was held on 28 July after the death of the incumbent Australian Labor Party member, former Prime Minister Ben Chifley, who died on 14 June after suffering a heart attack.

[1][2] William Blanchard ran as an independent Labor candidate in protest at Luchetti's selection as Chifley's successor.

[3] Their main opponent was William Hannam of the Liberal Party of Australia.

[3] Vernon Moffitt, representing the Communist Party of Australia, also ran.

At the following 1954 general election Luchetti retained the seat and was the sole Labor candidate.