The Leader of the Opposition in South Africa is the leader of the largest political party in the National Assembly that is not in government. The House of Assembly was the most important House from 1910 to 1994 and the National Assembly from 1994. The leader of the opposition acts as the public face of the opposition, leading the Official Opposition Shadow Cabinet and the challenge to the government on the floor of Parliament. They thus act as a chief critic of the government and ultimately attempt to portray the opposition as a feasible alternate government.