(a) Notwithstanding any other law, any person may engage in good faith bargaining between competing interests to secure legislative approval of matters embraced in a statewide or local initiative or referendum measure, and the proponents may, as a result of these negotiations, withdraw the measure at any time before filing the petition with the appropriate elections official.
(b) In addition to the procedure under subdivision (a), the proponents of a statewide initiative or referendum measure may withdraw the measure after filing the petition with the appropriate elections official at any time before the Secretary of State certifies that the measure has qualified for the ballot pursuant to Section 9033.
(c) Withdrawal of a statewide initiative or referendum measure shall be effective upon receipt by the Secretary of State of a written notice of withdrawal, signed by all proponents of the measure.
(d) Withdrawal of a local initiative or referendum measure shall be effective upon receipt by the appropriate local elections official of a written notice of withdrawal, signed by all proponents of the measure.