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The UK Parliament's two chambers represent a unique tension between elected democratic authority and appointed expert revision — a relationship that has evolved over centuries and remains actively contested.
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Unelected upper house of the UK Parliament. It revises legislation, scrutinizes government, and includes life peers, bishops, and a small number of hereditary peers.
The House of Commons is elected by the public through first-past-the-post constituency elections and derives its authority from the democratic mandate. The House of Lords is unelected — its members are appointed, hereditary, or serve as bishops — and its authority rests on convention, expertise, and the capacity for legislative revision rather than electoral legitimacy.
The Commons has legislative primacy. It controls the government's fate through confidence votes, controls taxation and spending, and can ultimately override the Lords through the Parliament Acts. The Lords can delay and revise legislation, but cannot permanently block most bills.
The Lords is often described as the revising chamber. Its members include former judges, generals, scientists, diplomats, and business leaders who bring specialist expertise to legislation that constituency-focused MPs may lack. Cross-bench (non-partisan) peers are a distinctive feature.
The House of Lords has been repeatedly reformed — hereditary peers were mostly removed in 1999 — but calls for further reform or abolition continue. The fundamental tension is whether an appointed chamber can legitimately check an elected one, and whether the expertise argument justifies the democratic deficit.
Constitutional monarchy and parliamentary democracy. Comprises England, Scotland, Wales, and Northern Ireland.
Bicameral legislature of the United Kingdom, consisting of the House of Commons and the House of Lords.
Head of government of the United Kingdom. Leader of the party with a majority in the House of Commons.
Presiding officer of the House of Commons. Elected by MPs and expected to act impartially in the conduct of parliamentary business.
