[2] Bulcock, representing the Labor Party, easily won the by-election[3] over rival J.P. Boland and held the seat for the 23 years.

Bulcock resigned from parliament in 1942 to take up a position with the federal government under Prime Minister, John Curtin.

The retired NSW Government Entomologist Walter Froggatt opposed the toad releases, and successfully lobbied the Australian Department of Health to ban them in November 1935, writing "This giant toad, immune from enemies, omnivorous in its habits, and breeding all year round, may become as great a pest as the rabbit or cactus".

The releases were therefore continued from September 1936, creating an ecological disaster that persists to this day while simultaneously failing to control the target cane beetle species.

Following his resignation from this position he took up an appointment to the Scarce Commodities Committee which met in Washington, D.C., USA with responsibility for fertilisers, phosphate rock and sulphur.