Each new seat can be described as a combination of parts of old seats. These table show this decomposition. The winner of the old seat at the 2010 election is shown by party colour, as is the implied winner of the new seat.
The implied results are now calculated using the local election results for the wards which make up each old seat. This should be more accurate than the earlier implied results which assumed each constituency was homogeneous.
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Amber Valley | 78.4% of Amber Valley | 33.0% of Derbyshire Mid |
| Bolsover | 80.0% of Bolsover | 21.6% of Amber Valley
4.9% of Derbyshire North East
|
| Chesterfield | 100% of Chesterfield | 6.3% of Derbyshire North East |
| Derby East | 56.3% of Derby South | 30.0% of Derbyshire Mid
27.4% of Derby North
|
| Derby West | 72.6% of Derby North | 16.5% of Derbyshire Mid
14.0% of Derby South
|
| Derbyshire Dales | 90.2% of Derbyshire Dales | 18.2% of Derbyshire South
5.9% of Derbyshire Mid
|
| Derbyshire North East | 88.8% of Derbyshire North East | 20.0% of Bolsover |
| Derbyshire South | 81.8% of Derbyshire South | 29.7% of Derby South |
| Erewash | 100% of Erewash | 14.6% of Derbyshire Mid |
| High Peak | 100% of High Peak | 9.8% of Derbyshire Dales |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Blaby | 56.2% of Leicestershire South | 24.9% of Bosworth
22.4% of Charnwood
|
| Bosworth | 53.8% of Bosworth | 44.9% of Leicestershire North West |
| Charnwood | 77.6% of Charnwood | 21.3% of Bosworth |
| Coalville and Keyworth | 55.1% of Leicestershire North West | 45.2% of Rushcliffe |
| Harborough | Unchanged | |
| Leicester East | Unchanged | |
| Leicester South | Unchanged | |
| Leicester West | 100% of Leicester West | 16.3% of Leicestershire South |
| Loughborough | Unchanged | |
| Rutland and Melton | Unchanged |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Ashfield | Unchanged | |
| Bassetlaw | 95.4% of Bassetlaw | |
| Broxtowe | 100% of Broxtowe | 2.3% of Rushcliffe |
| Mansfield | Unchanged | |
| Newark | 85.2% of Newark | 16.0% of Rushcliffe |
| Nottingham East | 60.1% of Gedling | 51.8% of Nottingham East |
| Nottingham North and Hucknall | 50.1% of Nottingham North | 44.4% of Sherwood
12.5% of Gedling
|
| Nottingham South and West Bridgford | 74.5% of Nottingham South | 36.5% of Rushcliffe |
| Nottingham West | 49.9% of Nottingham North | 48.2% of Nottingham East
25.5% of Nottingham South
|
| Sherwood | 55.6% of Sherwood | 27.4% of Gedling
14.8% of Newark
4.6% of Bassetlaw
|
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Nuneaton | 89.5% of Nuneaton | 17.0% of Rugby |
| Rugby | 83.0% of Rugby | 25.9% of Kenilworth and Southam |
| Stratford-upon-Avon | 85.2% of Stratford-on-Avon | 22.2% of Kenilworth and Southam |
| Warwick and Leamington | 100% of Warwick and Leamington | 5.9% of Kenilworth and Southam
5.2% of Stratford-on-Avon
|
| Warwickshire North | 100% of Warwickshire North | 10.5% of Nuneaton |