An Attorney General shall be elected by the qualified voters of the Commonwealth at the same time and for the same term as the Governor; and the fact of his election shall be ascertained in the same manner. No person shall be eligible for election or appointment to the office of Attorney General unless he is a citizen of the United States, has attained the age of thirty years, and has the qualifications required for a judge of a court of record. He shall perform such duties and receive such compensation as may be prescribed by law, which compensation shall neither be increased nor diminished during the period for which he shall have been elected. There shall be no limit on the terms of the Attorney General.