A Democrat , Miller served as Lieutenant Governor from 1975 to 1991 , 79th Governor of Georgia from 1991 to 1999 , and as United States Senator from 2000 to 2005 .
Miller was Lieutenant Governor from 1975 to 1991 , 79th Governor of Georgia from 1991 to 1999 , and as United States Senator from 2000 to 2005 .