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Election result for Cook's River, New South Wales, Australia
The seat was subsequently retained for the Labor Party by his eldest son Tom. Despite Cook's River being a safe Labor seat, the Liberal Party fielded a candidate, John Bampton, a soap manufacturer. The Labor primary vote improved by 1.6% compared to the previous year's general election. The Communist Party of Australia stood Wal Buckley, an organiser for the Amalgamated Engineering Union, but only gained 4.6% of the vote.
Results
1959 Cook's River by-election Saturday 12 December
The Labor Party retained the seat on an improved margin, which was nonetheless significant due to the large personal vote for Cahill and sympathy after his death which was then carried by his son.