As far as I can see, if the Commission insist on using the temporary 2010 wards for redistricting Cheshire, there’s only one way of forming a seat that doesn’t split Chester and Ellesmere Port.
That’s to have the Broxton and Eddisbury wards with the Chester city wards. This is not ideal, since the Gowy (Tarvin) ward is between Chester and the Eddisbury (Tarporley) ward, but it’s a workable solution. The Gowy and Mickle Trafford wards then go into a Runcorn seat. Dividing Halton between its two towns of Runcorn and Widnes is as least as good an arrangement as the dividing of Halton between 4 seats under the Commission’s proposals. Weaver ward goes into a Northwich & Winsford seat.
Note that in order to create a seat of the required size, Ellesmere Port is paired with Neston and Heswall rather than with Bromborough and Eastham.
The Congleton and Crewe & Nantwich seats could stay as they are, with the Cholmondley ward in the Northwich & Winsford seat, but in order to make that seat more compact I suggest putting Middlewich into it, Cholmondley going into Crewe & Nantwich and Doddington being transferred from Crewe & Nantwich to the Congleton seat.
Finally, Warrington would now be divided between 3 seats, with the Great Sankey area in with Widnes and most of the town south of the Mersey in with Knutsford.
Ellesmere Port & Heswall 72,837
City of Chester 79,723
Warrington North 80,168
Warrington South & Knutsford 80,242
Crewe & Nantwich 77,337
Update: if the Commission were willing to do a Gloucestershire, the above pattern could be tweaked by moving wards between the Runcorn, Northwich (Eddisbury) and Chester seats to produce version 2, which would also remove the need to change the Crewe and Congleton seats, or even version 3, which is the most similar to the current constituencies, although it’d be a shame not to use such an opportunity to unite Northwich in one seat.
Both these version require the inclusion of the Kelsall and Ashton Hayes parishes – electorate (2008) 2,893 – in the Northwich (Eddisbury) seat. These parishes are in the north east corner of the Gowy ward (See star on map).
City of Chester 78,709
Eddisbury (Northwich) 77,755
Crewe & Nantwich 78,845
City of Chester 80,135
Tatton (Warrington South & Knutsford) 79,967
Eddisbury (Northwich) 77,120
Crewe & Nantwich 78,845
And finally, an attempt to put the Halton and Warrington seats back how they are, if that’s what you prefer…
The basic point is that a single ward-split, as well as allowing Chester and Ellesmere Port to be unsplit, gives plenty of choice about how to configure seats elsewhere in the county.
Halton (Runcorn & Widnes) 79,618
Warrington North 77,975
Warrington South 80,257