Best for Britain Tactical Vote Dashboard methodology

Best for Britain’s Tactical Voting Dashboard to stop Extreme Brexit seeks to do two things:

  • Return as many cross-party candidates as possible that will fight Extreme Brexit and fight for a real choice on the final deal
  • Limit the majority of a likely Conservative Government in order to mount the strongest possible opposition to Theresa May’s Extreme Brexit agenda

In order to deliver this, Best for Britain has put the most emphasis on winnability of the seats, having considered a combination of commissioned research, the 2015 election results, polling from the last month, the attitudes to Brexit in the constituency and – where possible – local knowledge. In most cases, the candidate that looks most likely to beat a pro-Brexit candidate according to the data, has been backed. In some cases, because of the peculiarities of the local fight, candidate that is not the ‘obvious’ choice in data terms has been backed.

For the purposes of this Tactical Voting Website, the Labour Party, the Liberal Democrats and the Green Party are considered as parties that will fight Extreme Brexit. Which of these parties is most likely to win or be the closest contender for a seat is our default setting for our recommendation. These parties have different policies on Brexit, all have clearly expressed their willingness to fight Extreme Brexit and all have expressed their support for rejecting any deal that does not deliver the exact same benefits for the UK as membership. We believe that a majority of the candidates from these parties want to keep the door open to staying in if the deal is not in the national interest. For those seats in which there are Labour candidates who have been particularly vocal about leaving the EU, we recommend ‘voting your preference’, except in those cases in which we think a candidate has a credible chance of contesting the seat.

The Conservative Party and UKIP are considered as parties in support of Extreme Brexit due to their manifestos, so there are no direct recommendations for them. There are however, many Conservative candidates that we believe, though currently bound by the Conservative Manifesto, will speak up in Parliament against Extreme Brexit. We have indicated that voters should ‘vote their preference’ in these seats, except in some of the cases in which a strong Liberal Democrat has a chance of winning. We have not included Conservatives that are part of the government.

Our website focuses on England and Wales. We have not made calls in Scotland and Northern Ireland. The information supplied on the website from the 2015 election and polling should help voters make their decision.

We reserve the right to change our calls, according to any new information we receive from local knowledge and also from our digital outreach to candidates in the coming week. We also reserve the right to change calls to reflect any changes that may be needed in response to national and regional polling. We will update the list at least twice before 8 June.

The nature of creating a website for 573 constituencies means that we have taken a view based on the parties the candidates belong to. We are, however, committed to backing individual candidates that share our views. For any feedback on the website or the calls made, please write to Best for Britain at

Categories for calls

VOTE YOUR PREFERENCE     Conservative incumbents who are pro-Remain and Labour incumbents who are pro-Leave fall under this category

TO BE DETERMINED        We will make a call closer the elections

Party positions

The Labour position set out by Keir Starmer on 27 March: “Let me be clear: Labour will not support a deal that fails to reflect core British values and the six tests I have set out today.” The Labour manifesto supports a meaningful vote on the final deal.

The Liberal Democrat position in their manifesto is to give “the final say to the British people in a referendum on whether to accept the deal or remain in the EU” which would need a meaningful vote on the final deal in Parliament.

The Green party position in their manifesto is also a referendum on the final deal for Brexit.

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