(3) If district boundaries have changed since the previous election or the appointment, a candidate shall be considered an “incumbent” if the candidate:
- (a) Was elected to an office of the same name as the office to which the candidate seeks nomination or election at the most recent election to fill that office and is serving and has served continuously in that office from the beginning of the term to which the candidate was elected; or
- (b) Was appointed to an office of the same name as the office to which the candidate seeks nomination or election after the most recent election to fill that office and is serving and has served continuously in that office from the date of appointment.