1. Members of Parliament (MPs): Members of Parliament are elected representatives who serve in the legislative body of a country.
2. Speaker of the House: The Speaker of the House is the presiding officer and the highest authority in the lower house of a country's legislature. (Greg fergus)
3. The Prime Minister is the head of government (Justin Trudeau)
4. Cabinet Ministers are senior government officials who are appointed by the Prime Minister to head government departments or ministries.
5. Leader of the Official Opposition is the leader of the political party with the second-largest number of seats in the lower house of parliament. (Pierre Poilivere)
6. The Shadow Cabinet is a group of senior opposition MPs who hold spokesperson roles mirroring those of government ministers.