Fifteen additional South Island electorates were created, including Port Chalmers, and the number of Members of Parliament was increased by 13 to 70.
[4] Based on consultation feedback, the Port Chalmers Borough became part of the Oamaru electorate.
[9] James Dickson represented Chalmers for four parliamentary terms from the 1914 election until 1928, when he retired.
[10] Dickson was succeeded by another member of the Reform Party, Alfred Ansell, who won the 1928 and 1931 elections.
[12][13] Campbell had already won the nomination as the Labour candidate for the 1935 election against M. Connolly, when he died in February 1935 following an operation.
[14] Archie Campbell defeated Ansell with the swing to Labour in the 1935 election, but retired in 1938.