She cited a "lack of integrity, honesty and transparency" within the party.
"I have only been a member of PHON for four weeks and in this short period I am of the opinion that this party is more adherent to a dictatorship that a democratic organisation and lacks principles," Mrs Dodd said.
"PHON in my eyes are not about the WA people and their future but for personal power for Senator Hanson, who will do and say anything to achieve her goal at whatever cost.