Voters in England, Wales, Scotland and Northern Ireland are going to the polls on Thursday, 23 May, to elect 73 MEPs.
Nigel Farage's new Brexit Party is expected to do well, at the expense of the Tories and UKIP, and many Remainers are likely to vote for the Liberal Democrats or Change UK.
— Patrick Wintour (@patrickwintour) 22 May 2019
Those who are elected could only be MEPs for a matter of months as Britain is still expected to withdraw from the EU this year despite the failure of the government's Brexit deal to pass through the UK Parliament.
— Hannah Miller (@hannahITV) 22 May 2019
There have been plenty of jokes and memes on social media as voters see the funny side of the election.
— Roger Helmer (@RogerHelmerMEP) 21 May 2019
Polling stations will close at 10pm but the final results will not be announced until late on Sunday, 26 May, or early on Monday, 27 May.
By then Theresa May might have resigned.
— Dr Rachel Pope (@preshitorian) 23 May 2019
— Chris Brown (@ChrisBiproxy) 23 May 2019
— Andrew Pierce (@toryboypierce) 22 May 2019
— Simon_W (@MadManDrivel) 17 May 2019
— Tim Cuthbert (@timhpcc) 17 May 2019
— Lady Faye Elcock (@faye_elcock) 18 May 2019
— Alastair PEOPLE’S VOTE Campbell (@campbellclaret) 23 May 2019
— Europe Elects (@EuropeElects) 22 May 2019