[2] The party was founded by Ray Morritt, Nick Agnew, Frank Fitzpatrick and Neil Smith who were dissatisfied with the NSW Government's legislation on retirement villages and other seniors issues.

[5][6] The Seniors United Party's first three candidates were in the 2016 federal election to represent New South Wales in the Australian Senate.

[9] On 7 February 2018, the Australian Electoral Commission (AEC) issued a notice that it was considering deregistering the party on the grounds that it had ceased to have at least 500 members.

[11] After an appeal, the party was reregistered in November 2021 and contested the 2022 federal election, although none of its candidates were successful.

[12] However, SUPA was not registered with the New South Wales Electoral Commission and Nile left the party.