Pauline Hanson is being warned she needs to address Australia's economic grievances if the party is to retain surging support and turn anger against the two major parties into electoral success.
The One Nation leader addressed the National Press Club in Canberra for the first time in her 30-year political career, calling on migrants to assimilate into Australia's "monoculture" and vowing to reduce migrants from countries "immersed in extremism, like radical Islam".
She also labelled the increasing number of households facing financial hardship as "appalling" given the nation's wealth.
The ultra-conservative party's rise was a reflection of working people feeling they were going economically backwards in a wealthy country, YouGov director of public data Paul Smith said.
"Our polling shows that the number one reason for backing One Nation is not the leader, but the feeling of being unrepresented by the two major parties," he told AAP.