At federal level, the party achieved its best result at the 1970 Senate election, with nearly three percent of the national vote.

The leading figure in this group was a businessman, Gordon Barton, who was assisted in the funding by Ken Thomas of TNT Transport and with the party organisation and branch establishment by Nick Gorshenin, Sydney shark meshing contractor and North Sydney Council alderman.

They used their various contacts to establish the initial branches in Sydney, Melbourne, Brisbane, Newcastle and Gold Coast.

[5] In July 1974, Gordon Barton announced he would not seek re-election as national convenor of the Australia Party.

Siddons was publicly critical of the Whitlam government's economic policies,[7] and proclaimed that the party stood for "the middle ground against the extremes of either right or left".

[10] Subsequently, the party allied itself with the New Liberal Movement in the formation of the Australian Democrats for the 1977 federal election.

Two Australia Party members were elected to the newly formed Australian Capital Territory House of Assembly in 1975: Ivor Vivian and Maureen Worsley.

Vivian joined the Australian Democrats, and was re-elected in 1979, but Worsley sat as an Independent from 1977 to the end of her term in 1979.