‘Parliamentary government’ considers how Parliament became the ‘mirror of the nation’ and the nature of its role today. Initially created by the will of the monarch, Parliament became an institution due to monarchical necessity and eventually exerted its authority over the monarch in the Civil War. Cabinet government meant accountability was ensured through political rather than legal principle. With democratization through the expansion of the franchise, popular authority was exercised over the House of Lords. The complexity of big government has made it harder for Parliament to actually legislate, leaving this role to the government. Party mechanisms control the operation of government. Parliament now regulates government by testing ministers.