The governor general summons and appoints each of the 105 senators on the advice of the Prime Minister of Canada , while the 308 members of the House of Commons-called members of parliament ( MPs ) - are directly elected by eligible Canadian voters , with each MP representing a single electoral district , commonly referred to as a riding .
The governor general summons and appoints each of the 105 members of the upper house on the advice of the Prime Minister of Canada , while the 308 members of the lower house are directly elected by Canadian voters , with each Member of Parliament representing a single electoral district .