It's probably that - come the next general election - Melksham will no longer be a part of the Devizes constituency.  And that Chippenham will no longer be part of North Wilts ... this may be old news to some readers, but it wasn't something I had come across - it's a recommendation from as long ago as 2001, but these things take time.

I've been gathering a few details here

I'm sure that our MPs are already planning ahead for the changes - which just might be why we're seeing a concentration of their efforts on issue that will effect their new remits.