The justices of the Supreme Court and judges of all subordinate courts, except Assistant Judges and Judges of Probate, shall hold office for terms of six years except when holding office under an interim appointment. At the end of the initial six year term and at the end of each six year term thereafter, such justice or judge may give notice in the manner provided by law of a desire to continue in office. When such justice or judge gives the required notice, the question of continuance in office shall be submitted to the General Assembly and the justice or judge shall continue in office for another term of six years unless a majority of the members of the General Assembly voting on the question vote against continuation in office.