All appointments shall be filed with the Secretary of State by the appointing authority. The terms of the original members shall be as follows:
One one year term and until a successor is appointed and qualified;
One 2 year term and until a successor is appointed and qualified;
One 3 year term and until a successor is appointed and qualified;
2 4 year terms and until a successor is appointed and qualified;
2 5 year terms and until a successor is appointed and qualified;
2 6 year terms and until a successor is appointed and qualified. Thereafter all terms shall be for 6 years and until a successor is appointed and qualified. The Chairman, at the first meeting of the Commission, shall conduct a drawing by lot to determine the length of each original member's term.
725 ILCS 105/4