Member of Parliament ceasing to be parliamentary member of political party

1 This section applies to every member of Parliament, except a member elected as an independent. 2 The seat of a member of Parliament to whom this section applies becomes vacant if the member of Parliament ceases to be a parliamentary member of the political party for which the member of Parliament was elected. 3 For the purposes of subsection (2), a member of Parliament ceases to be a parliamentary member of the political party for which the member of Parliament was elected only if— a the member of Parliament delivers to the Speaker a written notice that complies with section 55B ; or b the parliamentary leader of the political party for which the member of Parliament was elected delivers to the Speaker a written notice that complies with section 55C . Section 55A : inserted , on 4 October 2018 , by section 5 of the Electoral (Integrity) Amendment Act 2018 (2018 No 39).