A circuit judge shall be elected for and from each circuit court district and the listing of individual precincts shall be those precincts as they existed on October 1, 1990. He may hold court in any other district with the consent of the judge thereof, when in their opinion the public interest may require. The terms of all circuit judges hereafter elected shall begin on the first day of January 1931 and their terms of office shall continue for four (4) years. A circuit judge shall be a resident of the district in which he or she serves but shall not be required to be a resident of a subdistrict if the district is divided into subdistricts.