 In addition, the remain campaign focused very heavily on the 'risk' posed by Brexit, but analysis in the time since shows this may have been a mistake.Analysis carried out by Harold D. Clarke, Matthew Godwin and Paul Whiteley, appears to show that those who had an unfavourable view of immigration and felt that too much decision making had been taken away from the UK government, were much more likely to minimise the risk of Brexit, partially because they perceived they had little to lose.It has been claimed that the role of migration as a key factor in driving voting behaviour at the referendum originates from the relatively high levels of net migration into the UK in the last decade.