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When British voters go to the polls on June 23, they will make an unprecedented decision. For the first time, a member state of the European Union (EU) is holding a referendum on the question of whether to remain in the union or leave it. The race is tight, with polls suggesting that neither side can be confident. As of May 2 the “poll of polls” calculated by the team around Professor John Curtice and the WhatUKThinks website suggests that, on average, poll results currently find Remain and Leave tied at 50 per cent.1

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