Question

What is purdah, and what changes during an election period?

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Purdah — now officially called the pre-election period of sensitivity — is the convention restricting government announcements and activity in the weeks before an election, so that public resources are not used to influence the result.

What it restricts. Civil servants and public bodies are expected to avoid:

New policy announcements or major initiatives that could influence voters.

Publishing material that could be seen as politically contentious.

Making significant appointments or long-term commitments.

Using public funds for anything that could be read as supporting a party.

What continues: essential government business, day-to-day administration, and responses to genuine emergencies. The government does not stop functioning, which is a common misconception — ministers remain in office and decisions that cannot wait are still taken, with appropriate consultation.

It is a convention, not a statute. Guidance is issued by the Cabinet Office, and adherence rests on civil service norms rather than legal enforcement — though breaches attract significant criticism.

The broadcast rules, which are separate and legally grounded. During an election period, broadcasters are subject to stricter requirements under the Ofcom Code:

Due impartiality applies with particular rigour, and appropriate coverage must be given to parties and candidates.

Constituency and electoral area reporting has specific rules: if a candidate takes part in an item about their constituency, the others must be offered the opportunity, and candidates cannot act as broadcasters during the period.

Opinion poll results may not be published on polling day itself until voting closes.

Party election broadcasts are allocated according to defined criteria.

Again, newspapers are unaffected and may campaign openly for a party throughout, which is the sharpest illustration of the difference between print and broadcast regulation in the UK.

Other election-period rules: campaign spending limits, both national and constituency-level; imprints required on campaign material, now including digital material, identifying who produced and promoted it; and restrictions on activity within polling stations.

Local and devolved elections trigger the same conventions for the relevant bodies.

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