Three years on, the reality of the split with the EU has changed minds. But dashed hopes could come to haunt Labour, too

Brexit is three years old and less popular than ever. More people are unhappy with Brexit outcomes to date, and pessimistic about the gains to come today than at any point in the Brexit process so far. “Rejoin” has opened up a double-digit lead over staying out in polls asking voters how they would choose in a second referendum on EU membership.

While voters have swung against Brexit before, the current shift is different. Earlier remain gains were driven by abstainers and those too young to vote in 2016 breaking against Brexit and by demographic changes which have slowly pulled the electorate in a pro-EU direction. The vast majority of leave and remain voters have hitherto stood by the choices they made in June 2016. That is now changing, and it is Brexiters who are reconsidering. One in five leave voters now say they would vote to rejoin the EU, while remain switching has stayed much lower. The scales of opinion are being tipped against Brexit by growing doubts among its original supporters.