In the aftermath of the Brexit referendum 2016, there was much speculation about a domino effect. Some argued that other member countries would follow the British example. The following chart shows how many of the decided voters would vote to remain in a leave-remain European Union membership referendum. The map is updated live with the latest single poll published on the topic.

Sources:

Deltapoll poll in October 2019 for the United Kingdom

Kantar poll in September 2019 for the Netherlands, Germany, Poland, Spain, France, and Ireland.

Sozialwissenschaftlichen Studiengesellschaft poll in September 2019 for Austria.

YouGov in May 2019 for Denmark, Finland, and Sweden.

Kantar poll in February and March 2019 for Belgium. Bulgaria, Croatia, Cyprus, Czechia, Estonia, Greece, Hungary, Latvia, Lithuania, Luxembourg, Malta, Portugal, Romania, Slovakia, and Slovenia.

The following map shows how many of the decided voters in the eurozone would vote to remain in a leave-remain eurozone membership referendum. It also shows how voters in EU member states outside of the eurozone (i.e. Bulgaria, Croatia, Denmark, Hungary, Poland, Romania, Sweden, and the UK) would vote in a join-remain outside eurozone membership referendum. The map is updated live with the latest single poll published on the topic.

Sources:

CVVM poll for Czechia in December 2019

CBOS poll for Poland in August 2019

TNS Kantar poll for the UK in June 2019

Kantar Sifo poll for Sweden in June 2019

Kantar Gallup poll for Denmark in June 2019

Kantar TNS BBSS poll for Bulgaria in June 2019

Hendal poll for Croatia in June 2019

TNS Hoffmann poll for Hungary in June 2019

CSOP poll for Romania in June 2019

Kantar Italia poll for Italy in June 2019

Taylor Nelson Sofres Market Research poll in June 2019

Kantar Public France poll for France in June 2019

MISCO pol for Malta in June 2019

Das Österreichische Gallup Institut poll for Austria in June 2019

CYMAR poll for Cyprus in June 2019

TNS LT poll for Lithuania in June 2019

Kantar Slovakia poll for Slovakia in June 2019

TNS Nipo poll for the Netherlands in June 2019

Kantar UK Limited poll for Ireland in June 2019

Kantar TNS poll for Latvia in June 2019

Kantar Deutschland poll for Germany in June 2019

Kantar TNS poll for Belgium in June 2019

TNS Investigación de Mercados y Opinión poll for Spain in June 2019

TNS ILRES poll for Luxembourg in June 2019

TNS Gallup Oy poll for Finland in June 2019

Marktest – Marketing, Organização e Formação poll for Portugal in June 2019

TNS Emor poll for Estonia in June 2019

Mediana poll for Slovenia in June 2019

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