Robert James Heffron, also known as Bob Heffron or R. J. Heffron, was a long-serving New South Wales politician, union organiser and Labor Party Premier of New South Wales from 1959 to 1964. Born in New Zealand, Heffron became involved in various Socialist and labour movements in New Zealand and later Australia before joining the Australian Labor Party. A prominent unionist organiser, we was gaoled for "conspiracy to strike action". He was later elected to the Parliament of New South Wales for Botany in 1930. However his disputes with party leader Jack Lang led to his expulsion from the ALP in 1936 and Heffron formed his own party from disgruntled Labor MPs known as the Industrial Labor Party. The success of his party enabled his readmission to the party and his prominence in a post-Lang NSW Branch which won office in 1941.

The 1930 New South Wales state election was held on 25 October 1930. The election was conducted in single member constituencies with compulsory preferential voting. The election occurred at the height of the Great Depression and was a landslide victory for the expansionary monetary policies of Jack Lang.