The term of office of each elective County officer is four years. All elective County officers shall be elected at the general election at which the Governor is elected, and shall take office at noon on the first Monday after the first day of January next succeeding their election and shall hold office until their successors are elected or appointed and qualified, unless sooner removed as provided by this Charter. All such elective County officers shall be nominated and elected in the manner provided by general laws for the nomination and election of such officers.