The Singapore Parliament is unicameral and together with the President of Singapore, is known as the Legislature. It is modelled after the Westminster system of parliamentary democracy, where Members of Parliament (MPs) are voted in at regular General Elections. In Singapore, a General Election must be held at least once every five years. The leader of the political party that secures the majority of seats in Parliament will be asked by the President to become the Prime Minister. MPs consist of either Elected, Non-Constituency or Nominated members.
The present 12th Parliament of Singapore, which opened its first session on 10 October 2011, has 99 MPs, comprising 87 elected MPs, 3 Non-Constituency MPs and 9 Nominated MPs.