Owing to the astute politics of Milton Margai, the educated Protectorate elites were able to join forces with the paramount chiefs in the face of Krio intransigence. Later, Margai used the same skills to win over opposition leaders and moderate Krio elements to achieve independence from the UK. In November 1951, Margai oversaw the drafting of a new constitution, which united the separate Colonial and Protectorate legislatures and provided a framework for decolonisation. In 1953, Sierra Leone was granted local ministerial powers and Margai was elected Chief Minister of Sierra Leone. The new constitution ensured Sierra Leone had a parliamentary system within the Commonwealth of Nations. In May 1957, Sierra Leone held its first parliamentary election. The SLPP, which was then the most popular political party in the colony of Sierra Leone as well as being supported by the powerful paramount chiefs in the provinces, won the most seats in Parliament and Margai was re-elected as Chief Minister by a landslide.