Highly sophisticated techniques to ‘micro-target’ voters, using personal data and demographics have been credited with contributing to the recent outcomes of both the Brexit vote in the UK and Donald Trump’s victory in America. Strategists involved in the forthcoming elections in France and Germany ignore these latest methods at their peril. But can techniques used in marketing to sell cars and toothpaste really be effective in predicting and then manipulating voters in an election? Join Owen Bennett Jones and his guests on Newshour Extra as they discuss what part micro-targeting will have in the politics of tomorrow.