The constituencies on which all elections have been fought since 2010 have been revised to reflect population changes.
Enter your postcode in the lookup below to see a map of your new and old voting area, as well as charts that show you how it would have voted in 2019 and how many older people, graduates and homeowners there are compared with other parts of the country.
Scale of Labour’s challenge revealed – latest updates
Read more:
Where Starmer needs to win to become PM
Why changes matter and how 2019 would have been different
How the new map makes it tougher for Labour to gain power
A full methodology of the notional results estimates used by Colin Rallings and Michael Thrasher can be accessed here.
The underlying data on all of the new vote estimates for each constituency can be downloaded as a spreadsheet.
