The 2019 European elections in the United Kingdom will take place on Thursday 23 May. Citizens of the UK and other EU member states resident in this country and aged over 18 can vote, provided they are registered to do so by 7 May.
There are three different ways to vote:
Yes, you can appoint someone to vote on your behalf. Find out more on this website on how to vote by proxy
Yes, but if you are from another EU country (except those from Cyprus, Ireland and Malta) not only do you need to be registered, but you also need to complete a voter register form for these elections. Check out this website.
The voting system for the European elections is by proportional representation using a closed list: voting for a party or an independent candidate. For Northern Ireland, the Single Transferable Vote is used: ranking the candidates in order of preference). On this website you can find an explanation of how the voting system works.