How often must a general election take place?
Answer
Within 5 years of the previous general election
Explanation
Under the Dissolution and Calling of Parliament Act 2022, a UK general election must be held within five years of the first meeting of the previous Parliament, so in practice the maximum interval between general elections is five years.
The five-year maximum has been part of the British constitution since the Parliament Act 1911, which reduced the previous maximum term of seven years set by the Septennial Act 1715. The mechanics of calling an election, however, have changed several times in recent history. For most of the twentieth century, Parliament was dissolved by the monarch on the advice of the Prime Minister, which gave the governing party effective control over the timing of the election within the five-year limit. In 2011, the coalition government passed the Fixed-term Parliaments Act, which set a rigid five-year cycle and required either a two-thirds majority of the Commons or a vote of no confidence to trigger an early election. The Act was used to call early elections in 2017 and 2019, and it was repealed by the Dissolution and Calling of Parliament Act 2022, which restored the traditional prerogative of the Prime Minister to request a dissolution from the monarch at a time of their choosing.
In practice, a Prime Minister rarely waits the full five years. Recent elections have usually come every three to four years. Parliament is dissolved by royal proclamation, and polling day is set by a separate proclamation. The campaign period, known as the purdah period for the civil service, typically runs for about five weeks from dissolution to polling day.
If a Prime Minister takes no action and a Parliament approaches the five-year limit, it is dissolved automatically on the anniversary of its first meeting. A general election must then be called. This is the backstop that gives the five-year rule its force.
General elections are held on a single day, usually a Thursday, across all 650 constituencies in the United Kingdom. Between general elections, by-elections are held to fill individual seats that become vacant through death, resignation, or disqualification. Voters choose the Member of Parliament for their constituency, and the party that wins the most seats forms the government, usually with its leader becoming Prime Minister.
The most recent general elections were held in 2017, 2019, and 2024.
Why this matters for your test
The five-year cap on a Parliament is a core feature of British democracy. Life in the UK candidates are expected to know that the maximum interval between general elections is five years and to understand that in practice elections are often called earlier.
Source: Life in the United Kingdom: A Guide for New Residents (2023)
