Their idea is based on numbers – they want all constituencies to be more or less equal so that every MP represents around 70,000 individual people.
But places change, new residents arrive, towns grow and so the map now needs skilful surgery.
It is a very difficult job. They are trying to satisfy different demands from people, politicians, local authorities and the like.
They want to find a proposal everyone can agree – and its a struggle.
If you live in Bridgwater now I’m still your representative at Westminster.
But if this map gets the green light then you could be represented by someone completely different.
This is because the Boundaries Commission has decided, effectively, to remove the West Somerset end of the current constituency and bolt it on to a reshaped map of Tiverton and Minehead, so a big chunk of Somerset and a big chunk of Devon.
But please be patient.
This has not been agreed yet and even if it is it will not happen for a year or more.
Meanwhile there is ample opportunity to tell the Boundaries Commission what you think