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The Mechanics of a Further Referendum on Brexit

During the Brexit process, some called for a second referendum on the matter. The Unit conducted research on the mechanics of a further referendum to inform such debates. The Constitution Unit hadÌýno position on Brexit, but it recognises the importance of ensuring referendums are carefully planned andÌýtransparently conducted, so that theyÌýcommandÌýthe maximum legitimacy.

The first report, The Mechanics of a Further Referendum on Brexit, was published in October 2018. The second report,ÌýThe Mechanics of a Further Referendum on Brexit Revisited: Questions for the New Parliament, followed in December 2019 and offered a substantially updated analysis in the context of the 2019 general election campaign.

The Mechanics of a Further Referendum on Brexit Revisited: Questions for the New Parliament

Many of the parties' manifestos for the 2019 election campaign promised aÌýfurther public vote on Brexit.

Mechanics of a Further Referendum on Brexit - report cover
Labour promised that itÌýwould 'get Brexit sorted' within six months, and Boris Johnson pledgedÌýto reintroduce his Brexit deal to parliament by Christmas if the Conservatives won the general election. The Liberal Democrats promisedÌýthat, unless they won a majority and could enact their policy of revoking Article 50, they wouldÌý'fight' for a second referendum with the option to stay in the EU.Ìý

The Unit's second report on this matter,ÌýThe Mechanics of a Further Referendum on Brexit Revisited: Questions for the New Parliament,ÌýexaminedÌýthe scenarios under which a further referendum might haveÌýcome about, and consideredÌýthe key questionsÌýreferendum advocates in parliament would have had toÌýface: what option would have beenÌýput to voters, whether the result should haveÌýbeen legally binding, and how the vote would haveÌýbeen run.

The report wasÌýwritten by Alan Renwick, Meg Russell, Lisa James and Jess Sargeant. It formedÌýpart of the Constitution Unit's Brexit, Parliament and the Constitution project in collaboration with .Ìý

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Download the full report

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Blogposts

A preliminary version of the report's key conclusions was published as a blogpost in November 2019, and an edited version of the final chapter was published to coincide with the report's publication. Links to these posts can be found below.

In this blogpost, adapted from the report’s final chapter,ÌýAlan Renwick, Meg Russell, Lisa James and Jess SargeantÌýsummed up the key conclusions. They find that, though it would not be without difficulties, a vote on Johnson’s deal might haveÌýbeen the quickest option and the one most likely to command public legitimacy.Ìý

Proposals for another Brexit referendum wasÌýat the heart of the election campaign and it wasÌýtherefore important that the viability of politicians’ plans wereÌýthoroughly tested. Drawing on research on the matter,ÌýAlan Renwick, Meg RussellÌýandÌýLisa JamesÌýset out five key questions.Ìý

Key links

The Mechanics of a Further Referendum on Brexit

The Mechanics of a Further Referendum on Brexit - report cover
The possibility of a further referendum on Brexit was discussed widely during the Brexit process. TheÌýConstitution Unit hadÌýno position on Brexit or on whether such a referendum should be held, but recognisedÌýthat any furtherÌýreferendum, if there had been one,Ìýwould have needed toÌýbeÌýcarefully thought through.ÌýThe Unit’s report The Mechanics of a Further Referendum on Brexit aimed to inform such discussions.

Published in October 2018, the report found that a referendum would have been possible if parliament wanted it, though it would have raised a number of challenges. There were several points in the Brexit process at which such a vote could have been triggered. The report analysedÌýthe possible timing, the referendum question, and the regulation of the ballot.

The report was written by Jess Sargeant, Alan Renwick, and Meg Russell and funded by the JRSST Charitable Trust.Ìý

Download the full report

Read the news story

Blogposts

Preliminary versions of the report's chapters were published as blogposts between August and October 2018. Links to these posts can be found below.

Two years on from the Brexit vote, the benefits of a second referendum were being hotly debated. In this post, Jess Sargeant, Alan Renwick and Meg Russell identifiedÌýseven questions forÌýparliament to consider when it wasÌýdecidingÌýon whether to call for a second Brexit referendum.Ìý

At seven months before 'exit day' one of the perceived obstacles to a second Brexit referendum wasÌýtime. Here, in the second in a series of posts on the practicalities of a second referendum, Jess Sargeant, Alan Renwick and Meg Russell discussed the constraints, concluding a new referendum could have been held much more quickly than previous polls but a delay to exit day would most likely still have been needed.

At the time of writingÌý‘exit day’ less than seven months away, and public debate about a second Brexit vote was live. In the third of a series of posts on this topic, Jess Sargeant, Alan Renwick and Meg Russell outlined the key decision points and processes by which MPs or the government might haveÌýchosenÌýto trigger a second referendum.

In the fourth of a series of posts on the mechanics of a possible second referendum on Brexit, Jess Sargeant, Alan Renwick and Meg Russell considered what question might have been asked. This would have been crucial for the result of any such referendum to command legitimacy. Various models were proposed, but some wereÌýfar more credible than others.

This is the fifth in the series of posts about the practicalities of a possible second referendum. At the time of writingÌý‘exit day’ was set for 29 March 2019. Jess Sargeant, Alan Renwick and Meg Russell asked whether the Article 50 period could haveÌýbeen extended to allow a referendum to take place, and what the knock-on consequences would have been.

The 2018ÌýLabour Party conference left aÌýfurther Brexit referendum firmly on the political agenda. In the sixth of a series of posts on the mechanics of such a vote, Jess Sargeant, Alan Renwick, and Meg Russell examined what rules and regulations should govern the referendum process, if there had been one,Ìýand argued for important changesÌýto facilitate a fair and transparent campaign.

In the last of a series of posts on this topic, Meg Russell, Alan Renwick and Jess Sargeant summed up the report’s findings, focusing on how a referendum might have came about, what question could haveÌýbeen asked, and the implications for referendum timing.

Key links

This project was led byÌýAlan RenwickÌýandÌýMeg RussellÌýwithÌýJess SargeantÌýas Research Assistant.

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