North West: New Constituency Boundaries 2023

Each new seat can be described as a combination of parts of old seats. These tables show this decomposition. The winner of the old seat at the 2019 election is shown by party colour, as is the implied winner of the new seat.

The implied results are calculated using the local election results for the wards which make up each old seat. This should give the most accurate projection, since it reflects varying political behaviour across the seat.

North West Change Table

PartyOld SeatsNew SeatsChangeDisappearSwitch OutSwitch InFresh

The table shows how the various changes affect each party in this area. The total old and new seats are shown for each party, as well as their difference ('Change'). The change in seats is also explained through the four explanations:

The old seats which are disappearing are: Denton and Reddish; Penrith and The Border; Wirral South; Wyre and Preston North.

The old seats which are lost to another party are: Heywood and Middleton; Lancaster and Fleetwood; Westmorland and Lonsdale; Wirral West.

The new seats which are gained from another party are: Heywood and Middleton North; Lancaster and Wyre; Westmorland and Lonsdale; Wirral West.

The new seats which are freshly created are: Cheshire Mid; Manchester Rusholme.

Central Manchester

New seatPrimary componentSecondary component(s)
Altrincham and Sale West Unchanged
Blackley and Middleton South 60.8% of Blackley and Broughton 19.5% of Heywood and Middleton
11.6% of Manchester Central
Gorton and Denton 50.6% of Manchester Gorton 39.4% of Denton and Reddish
11.8% of Manchester Withington
Manchester Central 50.3% of Manchester Central 22.8% of Ashton under Lyne
16.2% of Blackley and Broughton
Manchester Rusholme 38.1% of Manchester Central 44.7% of Manchester Gorton
Manchester Withington 88.2% of Manchester Withington 4.8% of Manchester Gorton
Salford 77.2% of Salford and Eccles 11.2% of Blackley and Broughton
Stretford and Urmston Unchanged
Worsley and Eccles 64.6% of Worsley and Eccles South 22.8% of Salford and Eccles
12.8% of Leigh
Wythenshawe and Sale East Unchanged


New seatPrimary componentSecondary component(s)
Cheshire Mid 39.0% of Eddisbury 36.4% of Weaver Vale
13.9% of Congleton
5.4% of Tatton
Chester North and Neston 73.8% of Chester, City of 24.1% of Ellesmere Port and Neston
Chester South and Eddisbury 56.7% of Eddisbury 24.5% of Chester, City of
9.8% of Weaver Vale
5.6% of Crewe and Nantwich
Congleton 86.1% of Congleton 0.3% of Eddisbury
Crewe and Nantwich 94.4% of Crewe and Nantwich 0.7% of Eddisbury
Ellesmere Port and Bromborough 68.3% of Ellesmere Port and Neston 40.3% of Wirral South
Macclesfield Unchanged
Runcorn and Helsby 52.6% of Weaver Vale 33.7% of Halton
7.6% of Ellesmere Port and Neston
3.3% of Eddisbury
1.7% of Chester, City of
Tatton 94.6% of Tatton 11.5% of Warrington South
1.2% of Weaver Vale
Warrington North 99.8% of Warrington North 0.0% of Warrington South
Warrington South 88.5% of Warrington South 0.2% of Warrington North
Widnes and Halewood 66.3% of Halton 21.9% of Garston and Halewood
7.5% of St Helens South and Whiston
0.0% of Knowsley


New seatPrimary componentSecondary component(s)
Barrow and Furness 100% of Barrow and Furness 12.8% of Copeland
Carlisle 90.6% of Carlisle 26.4% of Penrith and The Border
Penrith and Solway 57.6% of Workington 43.4% of Penrith and The Border
10.5% of Copeland
9.4% of Carlisle
Westmorland and Lonsdale 77.9% of Westmorland and Lonsdale 30.3% of Penrith and The Border
Whitehaven and Workington 76.7% of Copeland 42.4% of Workington

Eastern Manchester

New seatPrimary componentSecondary component(s)
Ashton under Lyne 77.2% of Ashton under Lyne 29.0% of Denton and Reddish
Cheadle Unchanged
Hazel Grove 100% of Hazel Grove 16.2% of Stockport
Heywood and Middleton North 80.5% of Heywood and Middleton 10.3% of Rochdale
Oldham East and Saddleworth Unchanged
Oldham West, Chadderton and Royton 100% of Oldham West and Royton
Rochdale 89.7% of Rochdale
Stalybridge and Hyde Unchanged
Stockport 83.8% of Stockport 31.5% of Denton and Reddish


New seatPrimary componentSecondary component(s)
Blackburn 97.4% of Blackburn 0.5% of Rossendale and Darwen
Blackpool North and Fleetwood 69.6% of Blackpool North and Cleveleys 27.9% of Lancaster and Fleetwood
15.9% of Wyre and Preston North
Blackpool South 100% of Blackpool South 30.4% of Blackpool North and Cleveleys
Burnley 100% of Burnley 15.9% of Pendle
Chorley 95.6% of Chorley
Fylde 92.5% of Fylde 16.3% of Wyre and Preston North
Hyndburn Unchanged
Lancashire West Unchanged
Lancaster and Wyre 66.8% of Lancaster and Fleetwood 24.4% of Wyre and Preston North
14.9% of Morecambe and Lunesdale
Morecambe and Lunesdale 85.1% of Morecambe and Lunesdale 22.1% of Westmorland and Lonsdale
5.3% of Lancaster and Fleetwood
Pendle and Clitheroe 84.1% of Pendle 26.9% of Ribble Valley
Preston 99.6% of Preston 12.5% of Wyre and Preston North
7.5% of Fylde
Ribble South 82.4% of Ribble South 7.6% of Ribble Valley
4.4% of Chorley
Ribble Valley 65.5% of Ribble Valley 30.9% of Wyre and Preston North
0.4% of Preston
Rossendale and Darwen 99.5% of Rossendale and Darwen 2.6% of Blackburn


New seatPrimary componentSecondary component(s)
Birkenhead 100% of Birkenhead 20.8% of Wirral South
Bootle Unchanged
Knowsley 81.2% of Knowsley 3.2% of St Helens South and Whiston
Liverpool Garston 78.1% of Garston and Halewood 16.8% of Liverpool Wavertree
Liverpool Riverside 63.1% of Liverpool Riverside 31.4% of Liverpool Walton
Liverpool Walton 68.6% of Liverpool Walton 34.0% of Liverpool West Derby
7.9% of Sefton Central
Liverpool Wavertree 65.4% of Liverpool Wavertree 36.9% of Liverpool Riverside
Liverpool West Derby 66.0% of Liverpool West Derby 18.8% of Knowsley
17.8% of Liverpool Wavertree
Sefton Central 92.1% of Sefton Central 14.4% of Southport
Southport 85.6% of Southport 17.6% of Ribble South
St Helens North Unchanged
St Helens South and Whiston 89.2% of St Helens South and Whiston
Wallasey 100% of Wallasey 11.2% of Wirral West
Wirral West 88.8% of Wirral West 38.9% of Wirral South

Western Manchester

New seatPrimary componentSecondary component(s)
Bolton North East 100% of Bolton North East 14.0% of Bolton South East
Bolton South and Walkden 71.6% of Bolton South East 35.4% of Worsley and Eccles South
Bolton West 85.0% of Bolton West 14.4% of Bolton South East
Bury North 100% of Bury North 11.6% of Bury South
Bury South 88.4% of Bury South 11.8% of Blackley and Broughton
Leigh and Atherton 84.5% of Leigh 15.0% of Bolton West
Makerfield 100% of Makerfield 2.7% of Leigh
Wigan Unchanged