There is also a leader of the opposition in the House of Lords (currently the Baroness Smith of Basildon). In the nineteenth century party affiliations were generally less fixed and leaders in the two Houses were often of equal status. A single, clear leader of the opposition was only definitively settled if the opposition leader in Commons or Lords was the outgoing prime minister. However, since the Parliament Act 1911 there has been no dispute that the leader in the House of Commons is pre-eminent and has always held the main title.