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 | 52 | 52 | 0 | -1 | 0 | 1 | 0 |
| LAB | 5 | 4 | -1 | 0 | -1 | 0 | 0 |
| 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 | 58 | 57 | -1 | -1 | -1 | 1 | 0 |
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: Witham.
The old seats which are lost to another party are: Bedford.
The new seats which are gained from another party are: Bedford.
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Bedford | 99.2% of Bedford | 3.8% of Bedfordshire Mid
2.2% of Bedfordshire North East
|
| Bedfordshire Mid | 80.9% of Bedfordshire Mid | 10.4% of Bedfordshire North East
0.1% of Bedford
|
| Bedfordshire North East | 87.4% of Bedfordshire North East | 1.5% of Bedfordshire Mid
0.7% of Bedford
|
| Bedfordshire South West | 80.9% of Bedfordshire South West | 13.8% of Bedfordshire Mid |
| Luton North and Houghton Regis | 91.8% of Luton North | 15.4% of Bedfordshire South West |
| Luton South | 100% of Luton South | 8.2% of Luton North
3.7% of Bedfordshire South West
|
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Cambridge | 100% of Cambridge | 6.7% of Cambridgeshire South |
| Cambridgeshire North East | 92.6% of Cambridgeshire North East | |
| Cambridgeshire North West | 87.0% of Cambridgeshire North West | 0.0% of Huntingdon |
| Cambridgeshire South | 79.1% of Cambridgeshire South | 10.9% of Cambridgeshire South East
4.4% of Huntingdon
|
| Cambridgeshire South East | 89.1% of Cambridgeshire South East | 5.2% of Cambridgeshire North West |
| Huntingdon and St Neots | 95.6% of Huntingdon | 0.0% of Cambridgeshire North West |
| Peterborough | 100% of Peterborough | 7.8% of Cambridgeshire North West |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Basildon and East Thurrock | 75.3% of Basildon South and East Thurrock | 36.4% of Basildon and Billericay |
| Billericay | 63.6% of Basildon and Billericay | 46.5% of Maldon
5.2% of Saffron Walden
|
| Braintree | 84.8% of Braintree | 20.3% of Witham |
| Brentwood and Ongar | 92.4% of Brentwood and Ongar | 10.8% of Saffron Walden |
| Castle Point | 85.5% of Castle Point | 24.7% of Basildon South and East Thurrock |
| Chelmsford | Unchanged | |
| Colchester | 100% of Colchester | 2.7% of Harwich and North Essex |
| Epping Forest | Unchanged | |
| Essex North East | 73.3% of Harwich and North Essex | 29.9% of Witham
11.0% of Clacton
|
| Harlow | 100% of Harlow | 7.6% of Brentwood and Ongar |
| Harwich and Clacton | 89.0% of Clacton | 24.1% of Harwich and North Essex |
| Rayleigh and Wickford | 95.4% of Rayleigh and Wickford | |
| Rochford and Southend East | 100% of Rochford and Southend East | 4.6% of Rayleigh and Wickford |
| Saffron Walden | 78.0% of Saffron Walden | 15.2% of Braintree |
| Southend West and Hadleigh | 100% of Southend West | 14.5% of Castle Point |
| Thurrock | Unchanged | |
| Witham and Maldon | 53.5% of Maldon | 49.8% of Witham
5.9% of Saffron Walden
|
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Broxbourne | 100% of Broxbourne | 2.8% of Hertford and Stortford |
| Hemel Hempstead | 97.0% of Hemel Hempstead | 3.6% of Watford
2.8% of St Albans
|
| Hertford and Stortford | 97.2% of Hertford and Stortford | |
| Hertfordshire South West | 89.2% of Hertfordshire South West | 3.0% of Hemel Hempstead |
| Hertsmere | 100% of Hertsmere | 9.5% of St Albans |
| Hitchin and Harpenden | Unchanged | |
| Letchworth and Royston | 89.4% of Hertfordshire North East | 14.1% of Cambridgeshire South |
| St Albans | 87.7% of St Albans | 17.5% of Watford
0.1% of Welwyn Hatfield
|
| Stevenage | 100% of Stevenage | 5.5% of Hertfordshire North East |
| Watford | 78.9% of Watford | 10.8% of Hertfordshire South West |
| Welwyn Hatfield | 99.9% of Welwyn Hatfield | 5.1% of Hertfordshire North East |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Broadland and Fakenham | 91.8% of Broadland | 2.8% of Norfolk Mid
2.9% of Norfolk North
|
| Great Yarmouth | 100% of Great Yarmouth | 2.8% of Norfolk South |
| Norfolk Mid | 82.3% of Norfolk Mid | 11.4% of Norfolk South West |
| Norfolk North | 97.1% of Norfolk North | 8.2% of Broadland |
| Norfolk North West | 100% of Norfolk North West | 2.8% of Norfolk South West |
| Norfolk South | 83.8% of Norfolk South | 14.8% of Norfolk Mid |
| Norwich North | 100% of Norwich North | 11.2% of Norwich South |
| Norwich South | 88.8% of Norwich South | 13.4% of Norfolk South |
| Thetford and Downham Market | 85.8% of Norfolk South West | 7.4% of Cambridgeshire North East |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Bury St Edmunds | 93.1% of Bury St Edmunds | |
| Central Suffolk | 91.4% of Suffolk Central and Ipswich North | 6.9% of Bury St Edmunds
0.5% of Suffolk Coastal
|
| Ipswich | 100% of Ipswich | 7.5% of Suffolk Central and Ipswich North |
| Suffolk Coastal | 99.5% of Suffolk Coastal | 1.2% of Suffolk Central and Ipswich North |
| Suffolk South | Unchanged | |
| Suffolk West | Unchanged | |
| Waveney | Unchanged |