Jennifer Game considered herself a "true believer" in One Nation.
Ms Game was One Nation's party leader in South Australia, and policy adviser to Pauline Hanson for eight years.
Once a political party, Pauline Hanson's One Nation has emerged as a third force in Australian politics, appealing to voters fed up with the two parties.
Ms Game said at first she was impressed by Senator Hanson's work ethic and direct communication style.
Ms Game said the influence of Senator Hanson's then chief of staff, James Ashby, undermined her authority.
Ms Game ran as a One Nation Senate candidate at last year's federal election.
When she failed to win a seat, she received a text from Mr Ashby criticising her ability to sell One Nation's "message", followed by what she described as a phone call from Senator Hanson.
After Ms Game quit the party, One Nation failed to repay her $2,000 nomination deposit, and more than $14,000 in claimable expenses from last year's election.
In June, a magistrate ordered One Nation to pay her more than $14,000 in electoral expenses.
Experienced political candidates who wanted to run for One Nation in the upcoming Victorian state election have told Four Corners the party's preselection process was slow, chaotic, not merit-based and a money-making exercise for the party.
After a disagreement with Warren Pickering Mr McLindon said his application was rejected.
Mr Labrador said that by early September the party had only announced a third of its lower house candidates.