(a) Should any member of the commission become disqualified under the provisions of this article, the fact of such disqualification and the ground or reason therefor shall be certified to the Governor by the judge of the circuit court for the county; and, when so certified, the office of the member of the commission shall become vacant and the Governor shall appoint his successor to fill out the unexpired term.
(b) In case of any vacancy from any other cause in the office of a member of the commission, the Governor shall appoint a member to fill such vacancy who shall hold office for the unexpired term.