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 | 38 | 36 | -2 | -1 | -2 | 1 | 0 |
| LAB | 8 | 8 | 0 | -1 | -1 | 2 | 0 |
| LIB | 0 | 0 | 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 | 46 | 44 | -2 | -2 | -3 | 3 | 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: Derbyshire Mid; Nottingham East.
The old seats which are lost to another party are: Derby North; Derby South; Gedling.
The new seats which are gained from another party are: Derby West; Derby East; Nottingham East and Carlton.
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Amber Valley | 78.3% of Amber Valley | 35.9% of Derbyshire Mid |
| Bolsover | 79.8% of Bolsover | 21.7% of Amber Valley
4.7% of Derbyshire North East
|
| Chesterfield | 100% of Chesterfield | 6.2% of Derbyshire North East |
| Derby East | 46.0% of Derby South | 30.4% of Derbyshire Mid
27.6% of Derby North
7.4% of Derbyshire South
|
| Derby West | 55.6% of Derby North | 54.0% of Derby South |
| Derbyshire Dales | 100% of Derbyshire Dales | 25.1% of Derbyshire Mid |
| Derbyshire North East | 89.1% of Derbyshire North East | 20.2% of Bolsover |
| Derbyshire South | 92.6% of Derbyshire South | 16.7% of Derby North |
| Erewash | 100% of Erewash | 8.6% of Derbyshire Mid |
| High Peak | Unchanged |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Bosworth | 94.1% of Bosworth | |
| Charnwood | 71.8% of Charnwood | 22.0% of Loughborough
5.9% of Bosworth
|
| Harborough, Oadby and Wigston | 90.6% of Harborough | 7.0% of Rutland and Melton |
| Leicester East | Unchanged | |
| Leicester South | Unchanged | |
| Leicester West | 100% of Leicester West | 15.7% of Leicestershire South |
| Leicestershire North West | Unchanged | |
| Leicestershire South | 72.6% of Leicestershire South | 21.8% of Charnwood |
| Loughborough and South Rushcliffe | 78.0% of Loughborough | 24.6% of Rushcliffe |
| Rutland and Melton | 93.0% of Rutland and Melton | 6.4% of Charnwood |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Boston and Skegness | 99.5% of Boston and Skegness | 7.1% of Sleaford and North Hykeham |
| Gainsborough | Unchanged | |
| Grantham and Stamford | 98.4% of Grantham and Stamford | 0.5% of Sleaford and North Hykeham |
| Lincoln and North Hykeham | 90.2% of Lincoln | 15.4% of Sleaford and North Hykeham |
| Louth and Horncastle | 100% of Louth and Horncastle | 0.5% of Boston and Skegness |
| Sleaford | 77.0% of Sleaford and North Hykeham | 9.8% of Lincoln
1.6% of Grantham and Stamford
|
| South Holland and The Deepings | Unchanged |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Corby and Northamptonshire East | 92.1% of Corby | |
| Daventry and Lutterworth | 75.3% of Daventry | 11.6% of Leicestershire South
9.4% of Harborough
2.4% of Wellingborough
|
| Kettering | 100% of Kettering | 4.3% of Wellingborough |
| Northampton North | 99.1% of Northampton North | 27.9% of Northampton South |
| Northampton South | 72.1% of Northampton South | 31.3% of Northamptonshire South
5.4% of Daventry
0.9% of Northampton North
|
| Northamptonshire South | 68.7% of Northamptonshire South | 19.3% of Daventry |
| Wellingborough and Rushden | 93.3% of Wellingborough | 7.9% of Corby |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Ashfield | 99.9% of Ashfield | |
| Bassetlaw | Unchanged | |
| Broxtowe and Hucknall | 71.4% of Broxtowe | 34.7% of Sherwood
0.1% of Ashfield
|
| Mansfield | Unchanged | |
| Newark | 99.5% of Newark | 5.0% of Sherwood
1.3% of Rushcliffe
|
| Nottingham East and Carlton | 56.2% of Gedling | 63.7% of Nottingham East |
| Nottingham North | 82.0% of Nottingham North | 36.3% of Nottingham East |
| Nottingham West and Beeston | 69.9% of Nottingham South | 28.6% of Broxtowe
18.0% of Nottingham North
|
| Rushcliffe North and Clifton | 74.1% of Rushcliffe | 30.1% of Nottingham South |
| Sherwood | 60.3% of Sherwood | 43.8% of Gedling
0.5% of Newark
|