As the fallout from the 2017 snap General Election continues into the summer, a little light has been shed on how and why Theresa May lost her overall Commons majority. It's in the shape of the British Election Study which has followed more than 30 thousand voters over the past three years. Brexit was major factor in voters' opinions and can explain a surge in support for Labour among backers of Remain. But there was plenty more detail in the study. To dissect the numbers, Sky's Head of Data Harry Carr is joined by one of the co-ordinators of the study - Chris Prosser from the University of Manchester. #GE2017 #Corbyn #May #Labour #Tories #LibDems #SNP #Brexit