The House of Commons is the most powerful of Parliament's two houses.
It has 659 members who are elected when the whole nation votes in a general election.
The members are called MPs. They are elected by people in their constituency
The Commons is the most important place for discussing policies and making laws.
All bills must go through both Houses before they become 'Acts' (laws).
There are only 427 green leather seats so when it's full a lot of politicians have to stand!