EU Referendum Poll: December 2017

Below is the results of a nationwide survey of 1,000 people carried out in December 2017. Results are weighted to match the UK internet population.

This asks the official UK EU Referendum question “Should the United Kingdom remain a member of the European Union or leave the European Union?”.


  • Remain: 45.1%
  • Leave: 30.6%
  • Undecided: 24.3%

The distance between ‘Remain’ & ‘Leave’ of 14.55% points is the highest in all polls I’ve carried out since the referendum.

Immediately post referendum, a large shift seemed to take place between the ‘Undecided’ group and ‘Leave’. This poll contains the largest indicator so far of any shift from ‘Leave’ to ‘Remain’.


Having carried out around 30 such polls (each of which covers the UK, and is weighted by age and gender to match UK population), I looked back to take a look at the data for the year since the EU Referendum, followed by the most recent survey.

As can be seen by the final column, the ‘Remain-Leave Gap’ (the difference between the % answering ‘Remain’ and % answering ‘Leave’) is the highest it has been since the referendum date. ‘Undecided’ remains fairly stable, while ‘Leave’ is down and ‘Remain’ is up.

Notes & Caveats:

  • The question here was as per the official question, it does not ask “If there were another referendum today…” or attempt to judge how people would vote, it is instead a snapshot of opinion.
  • No attempt is made to gather whether users are eligible to vote, or were eligible to vote at the point of the referendum.
  • Weighting is vs the UK internet population, which sways slightly younger than overall population.
  • Data is gathered via the internet, fieldwork was carried out between 19-22 Dec 2017.




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