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Many media outlets have reported that it was predominantly the older generations in the UK who voted to ‘Leave’ the EU in a recent referendum, while those under 25 were keenest to ‘Remain’. It has prompted many listeners to ask whether a referendum on this topic might yield a different result if held in a few years’ time as the electorate changes. We attempt some back of the envelope calculations with Tom Chivers from Buzzfeed. But actually – how good is the data available? How do we know how people voted or how they would vote in the future?

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