If a councillor leaves their seat during the course of their term, a casual vacancy occurs. This could be due to the resignation of a councillor, the passing away of a councillor, the disqualification (or ceasing to be qualified) of a councillor, or a failure to take up office.
When a councillor's seat becomes vacant the Town/Parish clerk will notify East Devon District Council. The clerk will display a 'notice of a casual vacancy' in the parish area. The notice explains that a by-election can be called by a request made in writing to the District Council's proper officer by 10 electors from the parish area, within 14 working days of the date of the notice. If a by-election is called it must be held within 60 days of the notice.