The Assembly acts as the eyes and ears of Londoners at City Hall. Assembly Members hold the Mayor to account by examining Mayoral strategies, decisions and actions to make sure they are in the public interest.
The Mayor makes decisions that affect Londoners' lives. This includes decisions about policing, transport, housing, fire and emergency planning, the environment, culture, economic development, regeneration, planning and development, and tackling health inequalities.
The position of Mayor of London was created in 2000 to be the elected voice of the capital and champion London both at home and abroad.
To vote in the Mayor of London and London Assembly elections you must be registered to vote, aged 18 or over, live in London (or Greater London) and be a British, EU or Commonwealth citizen who has or doesn't require leave to remain in the UK.
If you are unsure if you can vote (you may be in the armed forces, a student, have no fixed address) contact your local Borough Elections Office to find out.
You are not registered automatically if you pay council tax.
If you've never registered or changed address, register by 19 April to vote in the London elections.
The London elections use 3 voting systems so the count is different for the Mayoral, London-wide and Constituency Assembly member contests.
The votes are counted at the Excel Centre, Kensington Olympia and Alexandra Palace, with the final announcement of Mayor and London-wide Assembly Members made from City Hall. The Constituency Assembly Member declarations are made from the Count Centres.
We use an electronic vote-counting system that has been extensively tested and audited. Results will be verified before being declared.
At the polling station
Polls will be open from 7am to 10pm on 6 May 2021.
Tellers work for parties and may ask for your poll card number. This is so they can check who's voted and contact those who haven't. You don't have to give them any information. If you have concerns speak to polling station staff.
When you apply to vote by post you must supply your signature and date of birth. When you vote you supply these details again which are checked against those on your application. Your personal details are separated from your vote before it is counted.
The count will start at 8am on 7 May. This year's count will take place over 2 days to ensure social distancing measures can be in place. The first results could be announced later that evening at the very earliest.
Results for the Mayoral election stop at 90% of first choice votes while we count second choice votes if needed and carry out final checks.
Assembly election results also stop at 90% while we and Constituency Returning Officers carry out final checks.
The Greater London Returning Officer will announce the Mayor of London and London-wide Assembly Member results once they have been verified.