There shall be a State Board of Pardons and Paroles which shall consist of five members appointed by the Governor, subject to confirmation by the Senate. The members of the board in office on June 30, 1983, shall serve out the remainder of their respective terms, provided that the expiration date of the term of any such member shall be December 31 of the year in which the member's term expires. As each term of office expires, the Governor shall appoint a successor as herein provided. All such terms of members shall be for seven years. A chairman shall be selected by the members of the board from its membership.