This is a list of hereditary peers elected to serve in the House of Lords under the provisions of the House of Lords Act 1999 and the Standing Orders of the House of Lords. The Act excluded all hereditary peers who were not also life peers except for two holders of royal offices plus ninety other peers, to be chosen by the House. Before the enactment of the Act, the House approved a Standing Order stating that the remaining hereditary peers shall consist of: 2 peers to be elected by the Labour hereditary peers 42 peers to be elected by the Conservative hereditary peers 3 peers to be elected by the Liberal Democrat hereditary peers 28 peers to be elected by the Crossbencher hereditary peers 15 peers to be elected by the whole House The holders of the offices of Earl Marshal (the Duke of Norfolk) and Lord Great Chamberlain (currently the Baron Carrington) to be ex officio members The total number and sub-composition set out above reflects a compromise to ensure passage of the Act through the House reached between then-Prime Minister Tony Blair and the leader of the opposition Conservatives in the Lords, Viscount Cranborne (known since his father's death in 2003 as the Marquess of Salisbury), a descendant of the last Prime Minister to sit in the Lords throughout the entirety of their premiership. The number elected by each group reflected the relative strengths of the parties among hereditary peers at that time. Historically, the Conservatives had predominated in the House since 1890; it was this entrenched position which led to the removal of the absolute power of veto from the House of Lords by the Parliament Act 1911 and was the chief catalyst for the removal of most peers in 1999. The House of Lords Act 1999 reduced the proportion of Conservative peers in the House from 41% (in April 1999) to 33% (in June 2000), and the proportion of hereditary peers in the House from 59% to 13%. The fifteen peers elected by the whole house were intended to provide a group of experienced members ready to serve as Deputy Speakers or other officers. The initial elections took place before the House of Lords Act took effect; therefore all hereditary peers could vote in those elections. From the end of the 1998–1999 session of parliament until the following session, vacancies (usually triggered by death) were