New research shows that Labour is the party of remain, not just in the south and London, not just among the young, but in every age group, every social grade and every region of the country.
In safe seats and marginal seats, in remain voting seats and leave voting seats, it is the remain voters, whether Labour supporters, new voters or voters from other parties, who helped deliver Labour's shock result in June 2017.
Download our report as a PDF here.
Our methodology is here.