Portcullis House All rooms in the building are fitted with "annunciators" (monitors which announce in real-time the current business in the Chambers of the House of Commons, the House of Lords, or both). "Division bells" are also installed throughout the building, which alert MPs to the calling of a division (vote) in the Chamber of the House of Commons. Along with this, visual aids (a flashing image of a bell) are displayed on television sets and computer desktops in MPs' offices when the Division bell sounds. On the ground floor are a range of services including a waiter-service restaurant ("The Adjournment"), informal
House of Commons of Canada elected by simple plurality ("first-past-the-post" system) in each of the country's electoral districts, which are colloquially known as "ridings". MPs may hold office until Parliament is dissolved and serve for constitutionally limited terms of up to five years after an election. Historically however, terms have ended before their expiry and the sitting government has typically dissolved parliament within four years of an election according to a long-standing convention. In any case, an Act of Parliament now limits each term to four years. Seats in the House of Commons are distributed roughly in proportion to the population of each province and