The article investigates why some areas in the UK voted to leave the European Union (Brexit) while others voted to remain. The researchers looked at data from the 2011 Census for 380 Local Authorities and found that areas with more migrants who arrived between 2004 and 2011 were more likely to vote Leave. They also found that areas with a higher percentage of lower educated individuals and elderly people with poorer health were more likely to vote Leave. This suggests that recent migration, education levels, and health issues played a role in the Brexit vote.