South West: New Constituency Boundaries 2018

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.

South 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: Cornwall North; Dorset North.

The old seats which are lost to another party are: Plymouth Sutton and Devonport.

The new seats which are gained from another party are: Plymouth Sutton and Devonport.

Bristol area

New seatPrimary componentSecondary component(s)
Bath 100% of Bath 18.4% of Somerset North East
Bristol East 100% of Bristol East 10.3% of Bristol West
Bristol North West Unchanged
Bristol South Unchanged
Bristol West 89.7% of Bristol West
Dursley, Thornbury and Yate 81.9% of Thornbury and Yate 16.6% of Stroud
8.9% of Cotswolds, The
Filton and Bradley Stoke 100% of Filton and Bradley Stoke 9.2% of Thornbury and Yate
Kingswood 100% of Kingswood 8.9% of Thornbury and Yate
Somerset North Unchanged
Somerset North East 81.6% of Somerset North East 15.3% of Wells
6.9% of Somerton and Frome
Weston-super-Mare Unchanged


New seatPrimary componentSecondary component(s)
Bodmin and St Austell 61.1% of St Austell and Newquay 43.4% of Cornwall North
1.4% of Cornwall South East
Cornwall South East 98.6% of Cornwall South East 8.6% of Cornwall North
Falmouth, Camborne and Redruth 75.7% of Camborne and Redruth 37.3% of Truro and Falmouth
St Ives 100% of St Ives 18.1% of Camborne and Redruth
Truro and Newquay 62.7% of Truro and Falmouth 38.9% of St Austell and Newquay
6.2% of Camborne and Redruth


New seatPrimary componentSecondary component(s)
Bideford, Bude and Launceston 53.3% of Devon West and Torridge 47.9% of Cornwall North
Devon Central 83.5% of Devon Central 15.9% of Devon West and Torridge
Devon East 100% of Devon East 2.2% of Devon Central
Devon North Unchanged
Exeter Unchanged
Newton Abbot 90.0% of Newton Abbot 14.2% of Devon Central
Plymouth Moor View 100% of Plymouth Moor View 14.3% of Plymouth Sutton and Devonport
Plymouth Sutton and Devonport 85.7% of Plymouth Sutton and Devonport 28.0% of Devon South West
Plympton, Tavistock and Ivybridge 70.9% of Devon South West 30.7% of Devon West and Torridge
Tiverton and Honiton Unchanged
Torbay Unchanged
Totnes 100% of Totnes 10.0% of Newton Abbot
1.1% of Devon South West


New seatPrimary componentSecondary component(s)
Bournemouth East Unchanged
Bournemouth West 100% of Bournemouth West 8.8% of Poole
Christchurch 98.5% of Christchurch 17.0% of Dorset North
Dorset Mid 83.9% of Dorset Mid and Poole North 33.6% of Dorset North
1.5% of Christchurch
Dorset South 99.7% of Dorset South 9.1% of Dorset West
Dorset West 90.9% of Dorset West 6.0% of Dorset North
0.3% of Dorset South
Poole 91.2% of Poole 16.1% of Dorset Mid and Poole North


New seatPrimary componentSecondary component(s)
Cheltenham Unchanged
Cotswolds, The 86.4% of Cotswolds, The 9.1% of Tewkesbury
Forest of Dean 100% of Forest of Dean 3.9% of Tewkesbury
Gloucester 94.5% of Gloucester
Stroud 83.4% of Stroud 4.8% of Cotswolds, The
Tewkesbury 87.0% of Tewkesbury 5.5% of Gloucester


New seatPrimary componentSecondary component(s)
Bridgwater and West Somerset 91.8% of Bridgwater and West Somerset
Somerton and Frome 93.1% of Somerton and Frome
Taunton Deane Unchanged
Wells 84.7% of Wells 8.2% of Bridgwater and West Somerset
Yeovil and Somerset South 100% of Yeovil


New seatPrimary componentSecondary component(s)
Chippenham and North Wiltshire 71.8% of Wiltshire North 35.4% of Chippenham
Devizes and East Wiltshire 86.7% of Devizes 25.5% of Wiltshire North
Salisbury 99.8% of Salisbury 11.6% of Devizes
2.0% of Wiltshire South West
Swindon North 95.2% of Swindon North 2.3% of Swindon South
Swindon South 97.7% of Swindon South 4.8% of Swindon North
Trowbridge and West Wiltshire 64.6% of Chippenham 39.4% of Wiltshire South West
2.7% of Wiltshire North
1.7% of Devizes
Warminster and Shaftesbury 58.7% of Wiltshire South West 43.3% of Dorset North
0.2% of Salisbury