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.
| Party | Old Seats | New Seats | Change | Disappear | Switch Out | Switch In | Fresh |
|---|---|---|---|---|---|---|---|
| CON | 48 | 50 | 2 | -2 | 0 | 0 | 4 |
| LAB | 6 | 7 | 1 | 0 | 0 | 0 | 1 |
| LIB | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
| Brexit | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Green | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| MIN | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Total | 55 | 58 | 3 | -2 | 0 | 0 | 5 |
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: Kingswood; Wiltshire North.
The new seats which are freshly created are: Bristol North East; Cotswolds North; Frome and East Somerset; Melksham and Devizes; Tiverton and Minehead.
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Bath | 100% of Bath | 7.7% of Somerset North East |
| Bristol Central | 70.3% of Bristol West | |
| Bristol East | 61.2% of Bristol East | 20.6% of Bristol West
11.7% of Bristol South
|
| Bristol North East | 38.8% of Bristol East | 35.8% of Kingswood
11.9% of Bristol North West
9.6% of Filton and Bradley Stoke
|
| Bristol North West | 88.1% of Bristol North West | 9.1% of Bristol West |
| Bristol South | 88.3% of Bristol South | |
| Filton and Bradley Stoke | 82.2% of Filton and Bradley Stoke | 16.5% of Kingswood
1.7% of Thornbury and Yate
|
| Somerset North | 91.5% of Somerset North | |
| Somerset North East and Hanham | 54.8% of Somerset North East | 47.3% of Kingswood |
| Thornbury and Yate | 98.3% of Thornbury and Yate | 8.2% of Filton and Bradley Stoke
0.5% of Kingswood
|
| Weston-super-Mare | 84.8% of Weston-Super-Mare |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Camborne and Redruth | 92.2% of Camborne and Redruth | 10.9% of Truro and Falmouth |
| Cornwall North | 100% of Cornwall North | 5.8% of St Austell and Newquay |
| Cornwall South East | 99.3% of Cornwall South East | |
| St Austell and Newquay | 92.1% of St Austell and Newquay | 0.7% of Cornwall South East |
| St Ives | 100% of St Ives | 3.6% of Camborne and Redruth |
| Truro and Falmouth | 89.1% of Truro and Falmouth | 4.2% of Camborne and Redruth
2.0% of St Austell and Newquay
|
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Devon Central | 97.4% of Devon Central | 0.2% of Newton Abbot |
| Devon North | Unchanged | |
| Devon South | 98.4% of Totnes | 4.4% of Devon South West
0.2% of Torbay
|
| Devon South West | 95.6% of Devon South West | 7.5% of Devon West and Torridge |
| Exeter | 87.9% of Exeter | 0.9% of Devon East |
| Exmouth and Exeter East | 72.6% of Devon East | 12.1% of Exeter
2.3% of Devon Central
|
| Honiton and Sidmouth | 62.0% of Tiverton and Honiton | 26.5% of Devon East |
| Newton Abbot | 99.8% of Newton Abbot | |
| Plymouth Moor View | 100% of Plymouth Moor View | 5.2% of Plymouth Sutton and Devonport |
| Plymouth Sutton and Devonport | 94.8% of Plymouth Sutton and Devonport | |
| Torbay | 99.8% of Torbay | 1.6% of Totnes |
| Torridge and Tavistock | 92.5% of Devon West and Torridge | 0.3% of Devon Central |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Bournemouth East | 100% of Bournemouth East | 0.1% of Bournemouth West |
| Bournemouth West | 95.6% of Bournemouth West | 3.2% of Poole |
| Christchurch | 98.6% of Christchurch | 1.5% of Dorset North |
| Dorset Mid and Poole North | 100% of Dorset Mid and Poole North | 5.2% of Dorset North
3.6% of Bournemouth West
1.5% of Dorset South
1.4% of Christchurch
0.2% of Poole
|
| Dorset North | 92.5% of Dorset North | 2.0% of Dorset West |
| Dorset South | 98.2% of Dorset South | 6.0% of Dorset West |
| Dorset West | 92.0% of Dorset West | 0.8% of Dorset North
0.3% of Dorset South
|
| Poole | 96.6% of Poole | 0.6% of Bournemouth West |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Cheltenham | 94.1% of Cheltenham | |
| Cotswolds North | 44.3% of Cotswolds, The | 24.9% of Tewkesbury
16.1% of Stroud
|
| Cotswolds South | 49.2% of Cotswolds, The | 44.1% of Wiltshire North
0.0% of Chippenham
|
| Forest of Dean | Unchanged | |
| Gloucester | 94.1% of Gloucester | |
| Stroud | 83.9% of Stroud | 6.5% of Cotswolds, The |
| Tewkesbury | 75.1% of Tewkesbury | 5.9% of Gloucester
5.9% of Cheltenham
|
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Bridgwater | 61.5% of Bridgwater and West Somerset | 22.3% of Wells |
| Frome and East Somerset | 45.0% of Somerton and Frome | 37.5% of Somerset North East
4.5% of Wells
|
| Glastonbury and Somerton | 54.9% of Somerton and Frome | 19.3% of Wells
7.9% of Yeovil
|
| Taunton and Wellington | 87.1% of Taunton Deane | |
| Tiverton and Minehead | 38.0% of Tiverton and Honiton | 32.8% of Bridgwater and West Somerset
12.9% of Taunton Deane
|
| Wells and Mendip Hills | 53.8% of Wells | 15.2% of Weston-Super-Mare
8.5% of Somerset North
5.6% of Bridgwater and West Somerset
|
| Yeovil | 92.1% of Yeovil | 0.1% of Somerton and Frome |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Chippenham | 48.2% of Chippenham | 45.6% of Wiltshire North
0.9% of Devizes
|
| Melksham and Devizes | 46.6% of Chippenham | 35.5% of Devizes
10.3% of Wiltshire North
2.5% of Wiltshire South West
|
| Salisbury | 82.2% of Salisbury | 11.1% of Wiltshire South West |
| Swindon North | 87.4% of Swindon North | |
| Swindon South | 85.0% of Swindon South | 12.6% of Swindon North |
| Wiltshire East | 63.6% of Devizes | 17.8% of Salisbury
15.0% of Swindon South
|
| Wiltshire South West | 86.4% of Wiltshire South West | 5.1% of Chippenham |