# South Derbyshire (UK Parliament constituency)

South Derbyshire is a constituency represented in the House of Commons of the UK Parliament since 2024 by Samantha Niblett of the Labour Party.

## Boundaries
### Historic

The constituency was originally created after the Reform Act in 1832 when Derbyshire was divided into North Derbyshire and South Derbyshire.
1832–1868: The Hundreds of Appletree, Morleston and Litchurch, and Repton and Gresley, and so much of the Wapentake of Wirksworth as was not comprised in the Bakewell Division.
1868–1885: The Hundreds of Repton and Gresley, Morleston and Litchurch, and Appletree.
1885–1918: The Municipal Borough of Derby, the Sessional Divisions of Repton and Swadlincote, and parts of the Sessional Divisions of Ashbourne and Derby.
1918–1950: The Urban Districts of Alvaston and Boulton, Long Eaton, and Swadlincote, the Rural Districts of Hartshorne and Seals, and Shardlow, and part of the Rural District of Repton.
1983–1997: The District of South Derbyshire, and the City of Derby wards of Boulton, Chellaston, and Mickleover.
The present constituency was created in 1983 from parts of the seats of Derby North, Derby South, Belper, and South East Derbyshire.
1997–2010: The District of South Derbyshire, and the City of Derby wards of Boulton and Chellaston.
Mickleover ward was transferred to Derby South.
2010–2024: The District of South Derbyshire.
Under the Fifth Periodic Review of Westminster constituencies, approved for the 2010 general election, the constituency shed the two City of Derby wards to become coterminous with its district.

### Current

Further to the 2023 Periodic Review of Westminster constituencies, which came into effect for the 2024 general election, the composition of the constituency is as follows (as they existed on 1 December 2020):
* The District of South Derbyshire wards of Aston; Church Gresley; Etwall; Linton; Melbourne; Midway; Newhall and Stanton; Repton; Seales; Stenson; Swadlincote; Willington and Findern; Woodville.
This comprises the whole of South Derbyshire District, excluding the wards of Hatton and Hilton, which were transferred to Derbyshire Dales.
The South Derbyshire constituency covers Derbyshire to the south of the city of Derby, forming a tapering salient surrounded by Staffordshire and Leicestershire.

## Constituency profile

This constituency consists of rural and semi-rural settlements, including Repton (with its famous public school), in which a majority of voters have, in local elections since World War II, been Tory-voting, plus more historically industrial, and manufacturing-focussed settlements such as Swadlincote where the electorate has been for the most part Labour-voting.
Workless claimants were in November 2012 significantly lower than the national average of 3.8%, at 2.2% of the population based on a statistical compilation by The Guardian, and very close to that of the Mid Derbyshire seat, at 1.9%. Also similar is the regionally lowest jobseeker seat of Derbyshire Dales, with only 1.5% of the population registered as jobseekers.

## Members of Parliament
### MPs 1832–1885

Derbyshire prior to 1832
| Election | First member | First party | Second member | Second party |
| 1832 | Hon. George Venables-Vernon | Whig | The Lord Waterpark | Whig |
| 1835 | Sir George Harpur Crewe, Bt | Conservative | Sir Roger Gresley, Bt | Conservative |
| 1837 | Sir George Harpur Crewe, Bt | Conservative | Francis Hurt | Conservative |
| 1841 | Edward Miller Mundy | Conservative | Charles Robert Colvile | Conservative |
| 1846 | Edward Miller Mundy | Conservative | Charles Robert Colvile | Peelite |
| 1849 by-election | William Mundy | Conservative | Charles Robert Colvile | Peelite |
| 1857 | William Evans | Whig | Charles Robert Colvile | Peelite |
| 1859 | William Evans | Liberal | William Mundy | Conservative |
| 1865 | William Evans | Liberal | Charles Robert Colvile | Liberal |
| 1868 | Rowland Smith | Conservative | Sir Thomas Gresley, Bt | Conservative |
| 1869 by-election | Rowland Smith | Conservative | Sir Henry Wilmot, Bt | Conservative |
| 1874 | William Evans | Liberal | Sir Henry Wilmot, Bt | Conservative |
| 1885 | radical boundary changes, reduced to one member | radical boundary changes, reduced to one member | radical boundary changes, reduced to one member | radical boundary changes, reduced to one member |

### MPs 1885–1950

| Election | Member | Party |
| 1885 | Henry Wardle | Liberal |
| 1892 by-election | Harrington Evans Broad | Liberal |
| 1895 | John Gretton | Conservative |
| 1906 | Sir Herbert Raphael | Liberal |
| 1918 | Holman Gregory | Coalition Liberal |
| 1922 | Henry Lorimer | Conservative |
| 1924 | Sir James Augustus Grant | Conservative |
| 1929 | David Pole | Labour |
| 1931 | Paul Emrys-Evans | Conservative |
| 1945 | Joe Champion | Labour |
| 1950 | constituency abolished | constituency abolished |

### MPs since 1983

Derby North, Derby South, Belper and South East Derbyshire prior to 1983
| Election | Member | Party |
| 1983 | Edwina Currie | Conservative |
| 1997 | Mark Todd | Labour |
| 2010 | Heather Wheeler | Conservative |
| 2024 | Samantha Niblett | Labour |

## Elections
### Elections in the 2020s

General election 2024: South Derbyshire :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Samantha Niblett | 17,734 | 38.8 | +11.6 |
| | Conservative | Heather Wheeler | 13,566 | 29.7 | −32.4 |
| | Reform UK | Job West | 8,979 | 19.6 | N/A |
| | Liberal Democrats | Lucy Care | 2,134 | 4.7 | −2.6 |
| | Green | Aruhan Galieva | 1,941 | 4.2 | +0.9 |
| | Independent | Amy Wheelton | 1,200 | 2.6 | N/A |
| | Socialist Labour | Paul Liversuch | 183 | 0.4 | N/A |
| Majority | Majority | Majority | 4,168 | 9.1 | N/A |
| Turnout | Turnout | Turnout | 45,737 | 62.0 | −5.3 |
| Registered electors | Registered electors | Registered electors | 73,714 | | |
| | Labour gain from Conservative | Labour gain from Conservative | Swing | +22.0 | |

### Elections in the 2010s

General election 2019: South Derbyshire :
| Party | Party | Candidate | Votes | % | ±% |
| | Conservative | Heather Wheeler | 33,502 | 62.8 | +4.1 |
| | Labour | Robert Pearson | 14,167 | 26.5 | −9.5 |
| | Liberal Democrats | Lorraine Johnson | 3,924 | 7.4 | +3.8 |
| | Green | Amanda Baker | 1,788 | 3.3 | +1.6 |
| Majority | Majority | Majority | 19,335 | 36.3 | +13.6 |
| Turnout | Turnout | Turnout | 53,381 | 67.3 | −1.6 |
| | Conservative hold | Conservative hold | Swing | +6.8 | |
General election 2017: South Derbyshire :
| Party | Party | Candidate | Votes | % | ±% |
| | Conservative | Heather Wheeler | 30,907 | 58.7 | +9.3 |
| | Labour | Robert Pearson | 18,937 | 36.0 | +9.2 |
| | Liberal Democrats | Lorraine Johnson | 1,870 | 3.6 | −0.1 |
| | Green | Marten Kats | 917 | 1.7 | −0.7 |
| Majority | Majority | Majority | 11,970 | 22.7 | +0.1 |
| Turnout | Turnout | Turnout | 52,631 | 68.9 | +0.7 |
| | Conservative hold | Conservative hold | Swing | +0.1 | |
General election 2015: South Derbyshire :
| Party | Party | Candidate | Votes | % | ±% |
| | Conservative | Heather Wheeler | 25,066 | 49.4 | +3.9 |
| | Labour | Cheryl Pidgeon | 13,595 | 26.8 | −4.6 |
| | UKIP | Alan Graves | 8,998 | 17.7 | +15.3 |
| | Liberal Democrats | Lorraine Johnson | 1,887 | 3.7 | −12.2 |
| | Green | Marianne Bamkin | 1,216 | 2.4 | New |
| Majority | Majority | Majority | 11,471 | 22.6 | +8.5 |
| Turnout | Turnout | Turnout | 50,762 | 68.2 | −3.2 |
| | Conservative hold | Conservative hold | Swing | +4.25 | |
General election 2010: South Derbyshire :
| Party | Party | Candidate | Votes | % | ±% |
| | Conservative | Heather Wheeler | 22,935 | 45.5 | +8.1 |
| | Labour | Michael Edwards | 15,807 | 31.4 | −11.5 |
| | Liberal Democrats | Alexis Diouf | 8,012 | 15.9 | +3.0 |
| | BNP | Peter Jarvis | 2,193 | 4.3 | +0.3 |
| | UKIP | Charles Swabey | 1,206 | 2.4 | New |
| | Socialist Labour | Paul Liversuch | 266 | 0.5 | New |
| Majority | Majority | Majority | 7,128 | 14.1 | N/A |
| Turnout | Turnout | Turnout | 50,419 | 71.4 | +4.5 |
| | Conservative gain from Labour | Conservative gain from Labour | Swing | +9.8 | |

### Elections in the 2000s

General election 2005: South Derbyshire :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Mark Todd | 24,823 | 44.5 | −6.2 |
| | Conservative | Simon Spencer | 20,328 | 36.4 | +0.8 |
| | Liberal Democrats | Deborah Newton-Cook | 7,600 | 13.6 | +3.5 |
| | BNP | David Joines | 1,797 | 3.2 | New |
| | Veritas | Edward Spalton | 1,272 | 2.3 | New |
| Majority | Majority | Majority | 4,495 | 8.1 | −7.0 |
| Turnout | Turnout | Turnout | 55,820 | 65.6 | +1.5 |
| | Labour hold | Labour hold | Swing | −3.5 | |
General election 2001: South Derbyshire :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Mark Todd | 26,338 | 50.7 | −3.8 |
| | Conservative | James Hakewill | 18,487 | 35.6 | +4.3 |
| | Liberal Democrats | Russell Eagling | 5,233 | 10.1 | +1.1 |
| | UKIP | John Blunt | 1,074 | 2.1 | +1.1 |
| | Socialist Labour | Paul Liversuch | 564 | 1.1 | New |
| | Independent | James Taylor | 249 | 0.5 | New |
| Majority | Majority | Majority | 7,851 | 15.1 | −8.1 |
| Turnout | Turnout | Turnout | 51,945 | 64.1 | −14.1 |
| | Labour hold | Labour hold | Swing | −4.1 | |

### Elections in the 1990s

General election 1997: South Derbyshire :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Mark Todd | 32,709 | 54.5 | +10.5 |
| | Conservative | Edwina Currie | 18,742 | 31.3 | −15.9 |
| | Liberal Democrats | Robert Renold | 5,408 | 9.0 | +0.7 |
| | Referendum | Richard North | 2,491 | 4.2 | New |
| | UKIP | Ian Crompton | 617 | 1.0 | New |
| Majority | Majority | Majority | 13,967 | 23.2 | N/A |
| Turnout | Turnout | Turnout | 59,967 | 78.2 | −7.5 |
| | Labour gain from Conservative | Labour gain from Conservative | Swing | +13.2 | |
General election 1992: South Derbyshire :
| Party | Party | Candidate | Votes | % | ±% |
| | Conservative | Edwina Currie | 34,266 | 48.7 | −0.4 |
| | Labour | Mark Todd | 29,608 | 42.1 | +8.9 |
| | Liberal Democrats | Diana J. Brass | 6,236 | 8.9 | −8.8 |
| | Natural Law | Titus Mercer | 291 | 0.4 | New |
| Majority | Majority | Majority | 4,658 | 6.6 | −9.3 |
| Turnout | Turnout | Turnout | 70,401 | 84.7 | +3.4 |
| | Conservative hold | Conservative hold | Swing | −4.6 | |

### Elections in the 1980s

General election 1987: South Derbyshire :
| Party | Party | Candidate | Votes | % | ±% |
| | Conservative | Edwina Currie | 31,927 | 49.1 | +5.3 |
| | Labour | John Whitby | 21,616 | 33.2 | +4.0 |
| | SDP | John Edgar | 11,509 | 17.7 | −9.3 |
| Majority | Majority | Majority | 10,311 | 15.9 | +1.3 |
| Turnout | Turnout | Turnout | 65,052 | 81.3 | +2.8 |
| | Conservative hold | Conservative hold | Swing | | |
General election 1983: South Derbyshire :
| Party | Party | Candidate | Votes | % | ±% |
| | Conservative | Edwina Currie | 25,909 | 43.8 | |
| | Labour | Peter Kent | 17,296 | 29.2 | |
| | SDP | Roderick MacFarquhar | 15,959 | 27.0 | |
| Majority | Majority | Majority | 8,613 | 14.6 | |
| Turnout | Turnout | Turnout | 59,164 | 78.5 | |
| | Conservative win (new seat) | Conservative win (new seat) | Conservative win (new seat) | Conservative win (new seat) | Conservative win (new seat) |

### Election in the 1940s

General election 1945: South Derbyshire :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Arthur Champion | 47,586 | 57.7 | +9.2 |
| | Conservative | Paul Emrys-Evans | 24,636 | 29.9 | −21.6 |
| | Liberal | Norman Heathcote | 10,255 | 12.4 | New |
| Majority | Majority | Majority | 22,950 | 27.8 | N/A |
| Turnout | Turnout | Turnout | 82,477 | | |
| | Labour gain from Conservative | Labour gain from Conservative | Swing | +15.4 | |

### Elections in the 1930s

General election 1935: Derbyshire Southern :
| Party | Party | Candidate | Votes | % |
| | Conservative | Paul Emrys-Evans | 31,321 | 51.53 |
| | Labour | F. A. P. Rowe | 29,462 | 48.47 |
| Majority | Majority | Majority | 1,859 | 3.06 |
| Turnout | Turnout | Turnout | 60,783 | 73.55 |
| | Conservative hold | Conservative hold | Swing | |
General election 1931: South Derbyshire :
| Party | Party | Candidate | Votes | % | ±% |
| | Conservative | Paul Emrys-Evans | 33,965 | 58.64 | |
| | Labour | David Pole | 23,958 | 41.36 | |
| Majority | Majority | Majority | 10,007 | 17.28 | N/A |
| Turnout | Turnout | Turnout | 57,923 | 82.34 | |
| | Conservative gain from Labour | Conservative gain from Labour | Swing | | |

### Elections in the 1920s

General election 1929: Derbyshire South :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | David Pole | 25,101 | 47.4 | +6.9 |
| | Unionist | James Grant | 17,803 | 33.7 | −10.6 |
| | Liberal | Ebenezer Josiah Johnson | 9,998 | 18.9 | +3.7 |
| Majority | Majority | Majority | 7,298 | 13.7 | N/A |
| Turnout | Turnout | Turnout | 52,902 | 83.4 | +1.5 |
| Registered electors | Registered electors | Registered electors | 63,413 | | |
| | Labour gain from Unionist | Labour gain from Unionist | Swing | +8.8 | |
General election 1924: Derbyshire South :
| Party | Party | Candidate | Votes | % | ±% |
| | Unionist | James Grant | 16,448 | 44.3 | +5.8 |
| | Labour | Alfred Goodere | 15,033 | 40.5 | +7.8 |
| | Liberal | Alfred Suenson-Taylor | 5,647 | 15.2 | −13.6 |
| Majority | Majority | Majority | 1,415 | 3.8 | −2.0 |
| Turnout | Turnout | Turnout | 37,128 | 81.9 | +6.2 |
| Registered electors | Registered electors | Registered electors | 45,359 | | |
| | Unionist hold | Unionist hold | Swing | −1.0 | |
General election 1923: Derbyshire South :
| Party | Party | Candidate | Votes | % | ±% |
| | Unionist | Henry Lorimer | 12,902 | 38.5 | −4.1 |
| | Labour | Alfred Goodere | 10,919 | 32.7 | +3.1 |
| | Liberal | Gilbert Stone | 9,620 | 28.8 | +1.0 |
| Majority | Majority | Majority | 1,983 | 5.8 | −7.2 |
| Turnout | Turnout | Turnout | 33,441 | 75.7 | −4.1 |
| Registered electors | Registered electors | Registered electors | 44,171 | | |
| | Unionist hold | Unionist hold | Swing | −3.6 | |
General election 1922: Derbyshire South :
| Party | Party | Candidate | Votes | % | ±% |
| | Unionist | Henry Lorimer | 14,664 | 42.6 | New |
| | Labour | S. Truman | 10,201 | 29.6 | −4.2 |
| | National Liberal | G. Owen | 9,585 | 27.8 | −38.4 |
| Majority | Majority | Majority | 4,463 | 13.0 | N/A |
| Turnout | Turnout | Turnout | 34,450 | 79.8 | +21.4 |
| Registered electors | Registered electors | Registered electors | 43,172 | | |
| | Unionist gain from Liberal | Unionist gain from Liberal | Swing | | |

### Elections in the 1910s

General election 1918: Derbyshire South :
| Party | Party | Candidate | Votes | % | ±% |
| C | Liberal | Henry Holman Gregory | 15,504 | 66.2 | +15.0 |
| | Labour | Samuel Truman | 7,923 | 33.8 | New |
| Majority | Majority | Majority | 7,581 | 32.4 | +30.0 |
| Turnout | Turnout | Turnout | 23,427 | 58.4 | −28.6 |
| Registered electors | Registered electors | Registered electors | 40,112 | | |
| | Liberal hold | Liberal hold | Swing | | |
| C indicates candidate endorsed by the coalition government. ||||||
General election December 1910: South Derbyshire :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal | Herbert Raphael | 7,744 | 51.2 | −1.3 |
| | Conservative | John Bertram Marsden-Smedley | 7,373 | 48.8 | +1.3 |
| Majority | Majority | Majority | 371 | 2.4 | −2.6 |
| Turnout | Turnout | Turnout | 15,117 | 87.0 | −3.6 |
| | Liberal hold | Liberal hold | Swing | -1.3 | |
General election January 1910: South Derbyshire :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal | Herbert Raphael | 8,259 | 52.5 | −2.7 |
| | Conservative | John Bertram Marsden-Smedley | 7,473 | 47.5 | +2.7 |
| Majority | Majority | Majority | 786 | 5.0 | −5.4 |
| Turnout | Turnout | Turnout | 15,732 | 90.6 | +2.2 |
| | Liberal hold | Liberal hold | Swing | -2.7 | |

### Elections in the 1900s

General election 1906: South Derbyshire :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal | Herbert Raphael | 7,961 | 55.2 | +6.8 |
| | Conservative | John Gretton | 6,468 | 44.8 | −6.8 |
| Majority | Majority | Majority | 1,493 | 10.4 | N/A |
| Turnout | Turnout | Turnout | 14,429 | 88.4 | +7.2 |
| Registered electors | Registered electors | Registered electors | 16,326 | | |
| | Liberal gain from Conservative | Liberal gain from Conservative | Swing | +6.8 | |
General election 1900: South Derbyshire :
| Party | Party | Candidate | Votes | % | ±% |
| | Conservative | John Gretton | 6,073 | 51.6 | −2.3 |
| | Liberal | Herbert Raphael | 5,707 | 48.4 | +2.3 |
| Majority | Majority | Majority | 366 | 3.2 | −4.6 |
| Turnout | Turnout | Turnout | 11,780 | 81.2 | −3.6 |
| Registered electors | Registered electors | Registered electors | 14,499 | | |
| | Conservative hold | Conservative hold | Swing | −2.3 | |

### Elections in the 1890s

General election 1895: South Derbyshire :
| Party | Party | Candidate | Votes | % | ±% |
| | Conservative | John Gretton | 6,104 | 53.9 | New |
| | Liberal | Harrington Evans Broad | 5,217 | 46.1 | N/A |
| Majority | Majority | Majority | 887 | 7.8 | N/A |
| Turnout | Turnout | Turnout | 11,321 | 84.8 | N/A |
| Registered electors | Registered electors | Registered electors | 13,347 | | |
| | Conservative gain from Liberal | Conservative gain from Liberal | Swing | N/A | |
General election 1892: South Derbyshire :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal | Harrington Evans Broad | Unopposed | Unopposed | Unopposed |
| | Liberal hold | Liberal hold | Liberal hold | Liberal hold | Liberal hold |
By-election, 1892: South Derbyshire :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal | Harrington Evans Broad | 5,803 | 56.0 | −0.4 |
| | Conservative | Beresford Valentine Melville | 4,553 | 44.0 | +0.4 |
| Majority | Majority | Majority | 1,250 | 12.0 | −0.8 |
| Turnout | Turnout | Turnout | 10,356 | 73.2 | −5.0 |
| Registered electors | Registered electors | Registered electors | 14,152 | | |
| | Liberal hold | Liberal hold | Swing | −0.4 | |

### Elections in the 1880s

General election 1886: South Derbyshire :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal | Henry Wardle | 5,102 | 56.4 | −3.8 |
| | Liberal Unionist | Edward Coke | 3,949 | 43.6 | +3.8 |
| Majority | Majority | Majority | 1,153 | 12.8 | −7.6 |
| Turnout | Turnout | Turnout | 9,051 | 78.2 | −10.6 |
| Registered electors | Registered electors | Registered electors | 11,575 | | |
| | Liberal hold | Liberal hold | Swing | −3.8 | |
General election 1885: South Derbyshire :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal | Henry Wardle | 6,186 | 60.2 | N/A |
| | Conservative | George Curzon | 4,094 | 39.8 | N/A |
| Majority | Majority | Majority | 2,092 | 20.4 | N/A |
| Turnout | Turnout | Turnout | 10,280 | 88.8 | N/A |
| Registered electors | Registered electors | Registered electors | 11,575 | | |
| | Liberal win (new seat) | Liberal win (new seat) | Liberal win (new seat) | Liberal win (new seat) | Liberal win (new seat) |
General election 1880: South Derbyshire (2 seats) :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal | William Evans | Unopposed | Unopposed | Unopposed |
| | Conservative | Henry Wilmot | Unopposed | Unopposed | Unopposed |
| Registered electors | Registered electors | Registered electors | 8,934 | | |
| | Liberal hold | Liberal hold | Liberal hold | Liberal hold | Liberal hold |
| | Conservative hold | Conservative hold | Conservative hold | Conservative hold | Conservative hold |

### Elections in the 1870s

General election 1874: South Derbyshire (2 seats) :
| Party | Party | Candidate | Votes | % | ±% |
| | Conservative | Henry Wilmot | 3,934 | 34.9 | +9.3 |
| | Liberal | William Evans | 3,773 | 33.5 | −15.2 |
| | Conservative | Rowland Smith | 3,572 | 31.7 | +6.0 |
| Turnout | Turnout | Turnout | 7,526 (est) | 92.0 (est) | +2.7 |
| Registered electors | Registered electors | Registered electors | 8,179 | | |
| Majority | Majority | Majority | 161 | 1.4 | −0.1 |
| | Conservative hold | Conservative hold | Swing | +8.5 | |
| Majority | Majority | Majority | 201 | 1.8 | N/A |
| | Liberal gain from Conservative | Liberal gain from Conservative | Swing | −6.8 | |

### Elections in the 1860s

By-election, 16 Jan 1869: South Derbyshire (1 seat) :
| Party | Party | Candidate | Votes | % | ±% |
| | Conservative | Henry Wilmot | 3,511 | 50.2 | −1.1 |
| | Liberal | William Evans | 3,478 | 49.8 | +1.1 |
| Majority | Majority | Majority | 33 | 0.4 | −1.1 |
| Turnout | Turnout | Turnout | 6,989 | 89.2 | −0.1 |
| Registered electors | Registered electors | Registered electors | 7,833 | | |
| | Conservative hold | Conservative hold | Swing | −1.1 | |
* Caused by Gresley's death.
General election 1868: South Derbyshire (2 seats) :
| Party | Party | Candidate | Votes | % | ±% |
| | Conservative | Rowland Smith | 3,594 | 25.7 | +9.5 |
| | Conservative | Thomas Gresley | 3,582 | 25.6 | +9.4 |
| | Liberal | William Evans | 3,443 | 24.6 | −10.3 |
| | Liberal | Charles Robert Colvile | 3,375 | 24.1 | −8.6 |
| Majority | Majority | Majority | 151 | 1.1 | N/A |
| Majority | Majority | Majority | 207 | 1.5 | N/A |
| Turnout | Turnout | Turnout | 6,997 (est) | 89.3 (est) | −3.3 |
| Registered electors | Registered electors | Registered electors | 7,833 | | |
| | Conservative gain from Liberal | Conservative gain from Liberal | Swing | +9.1 | |
| | Conservative gain from Liberal | Conservative gain from Liberal | Swing | +9.9 | |
General election 1865: South Derbyshire (2 seats) :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal | William Evans | 3,891 | 34.9 | −0.8 |
| | Liberal | Charles Robert Colvile | 3,650 | 32.7 | +0.6 |
| | Conservative | William Mundy | 3,619 | 32.4 | +0.2 |
| Majority | Majority | Majority | 31 | 0.3 | N/A |
| Turnout | Turnout | Turnout | 7,390 (est) | 92.6 (est) | +23.3 |
| Registered electors | Registered electors | Registered electors | 7,976 | | |
| | Liberal hold | Liberal hold | Swing | −0.4 | |
| | Liberal gain from Conservative | Liberal gain from Conservative | Swing | +0.3 | |

### Elections in the 1850s

General election 1859: South Derbyshire (2 seats) :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal | William Evans | 3,536 | 35.7 | +1.1 |
| | Conservative | William Mundy | 3,185 | 32.2 | −3.7 |
| | Liberal | Charles Robert Colvile | 3,184 | 32.1 | +2.6 |
| Turnout | Turnout | Turnout | 4,953 (est) | 69.3 (est) | −10.6 |
| Registered electors | Registered electors | Registered electors | 7,147 | | |
| Majority | Majority | Majority | 351 | 3.5 | −13.7 |
| | Liberal hold | Liberal hold | Swing | +1.5 | |
| Majority | Majority | Majority | 1 | 0.1 | N/A |
| | Conservative gain from Liberal | Conservative gain from Liberal | Swing | −3.7 | |
General election 1857: South Derbyshire (2 seats) :
| Party | Party | Candidate | Votes | % | ±% |
| | Whig | William Evans | 3,922 | 34.6 | N/A |
| | Peelite | Charles Robert Colvile | 3,350 | 29.5 | N/A |
| | Conservative | Samuel Clowes | 2,105 | 18.5 | N/A |
| | Conservative | Philip Stanhope | 1,972 | 17.4 | N/A |
| Turnout | Turnout | Turnout | 5,675 (est) | 79.9 (est) | N/A |
| Registered electors | Registered electors | Registered electors | 7,102 | | |
| Majority | Majority | Majority | 1,950 | 17.2 | N/A |
| | Whig gain from Conservative | Whig gain from Conservative | Swing | N/A | |
| Majority | Majority | Majority | 1,245 | 11.0 | N/A |
| | Peelite hold | Peelite hold | Swing | N/A | |
General election 1852: South Derbyshire (2 seats) :
| Party | Party | Candidate | Votes | % | ±% |
| | Peelite | Charles Robert Colvile | Unopposed | Unopposed | Unopposed |
| | Conservative | William Mundy | Unopposed | Unopposed | Unopposed |
| Registered electors | Registered electors | Registered electors | 7,099 | | |
| | Peelite hold | Peelite hold | Peelite hold | Peelite hold | Peelite hold |
| | Conservative hold | Conservative hold | Conservative hold | Conservative hold | Conservative hold |

### Elections in the 1840s

By-election, 23 March 1849: South Derbyshire :
| Party | Party | Candidate | Votes | % | ±% |
| | Conservative | William Mundy | Unopposed | Unopposed | Unopposed |
| | Conservative hold | Conservative hold | Conservative hold | Conservative hold | Conservative hold |
* Caused by Mundy's death
General election 1847: South Derbyshire (2 seats) :
| Party | Party | Candidate | Votes | % | ±% |
| | Peelite | Charles Robert Colvile | Unopposed | Unopposed | Unopposed |
| | Conservative | Edward Miller Mundy | Unopposed | Unopposed | Unopposed |
| Registered electors | Registered electors | Registered electors | 7,272 | | |
| | Peelite gain from Conservative | Peelite gain from Conservative | Peelite gain from Conservative | Peelite gain from Conservative | Peelite gain from Conservative |
| | Conservative hold | Conservative hold | Conservative hold | Conservative hold | Conservative hold |
General election 1841: South Derbyshire (2 seats) :
| Party | Party | Candidate | Votes | % | ±% |
| | Conservative | Edward Miller Mundy | 3,234 | 28.9 | N/A |
| | Conservative | Charles Robert Colvile | 3,209 | 28.7 | N/A |
| | Whig | Matthew Gisborne | 2,403 | 21.5 | New |
| | Whig | Henry Cavendish | 2,325 | 20.8 | New |
| Majority | Majority | Majority | 806 | 7.2 | N/A |
| Turnout | Turnout | Turnout | 5,586 (est) | 82.1 (est) | N/A |
| Registered electors | Registered electors | Registered electors | 6,807 | | |
| | Conservative hold | Conservative hold | Swing | N/A | |
| | Conservative hold | Conservative hold | Swing | N/A | |

### Elections in the 1830s

General election 1837: South Derbyshire (2 seats) :
| Party | Party | Candidate | Votes | % |
| | Conservative | George Harpur Crewe | Unopposed | Unopposed |
| | Conservative | Francis Hurt | Unopposed | Unopposed |
| Registered electors | Registered electors | Registered electors | 6,575 | |
| | Conservative hold | Conservative hold | Conservative hold | Conservative hold |
| | Conservative hold | Conservative hold | Conservative hold | Conservative hold |
General election 1835: South Derbyshire (2 seats) :
| Party | Party | Candidate | Votes | % | ±% |
| | Conservative | George Harpur Crewe | 2,517 | 28.4 | +16.0 |
| | Conservative | Roger Gresley | 2,495 | 28.1 | +15.7 |
| | Whig | George Venables-Vernon | 1,951 | 22.0 | −16.8 |
| | Whig | Henry Cavendish | 1,910 | 21.5 | −14.8 |
| Majority | Majority | Majority | 607 | 6.9 | N/A |
| Majority | Majority | Majority | 544 | 6.1 | N/A |
| Turnout | Turnout | Turnout | c. 4,437 | c. 82.8 | c. −3.6 |
| Registered electors | Registered electors | Registered electors | 5,359 | | |
| | Conservative gain from Whig | Conservative gain from Whig | Swing | +15.9 | |
| | Conservative gain from Whig | Conservative gain from Whig | Swing | +15.8 | |
General election 1832: South Derbyshire (2 seats) :
| Party | Party | Candidate | Votes | % |
| | Whig | George Venables-Vernon | 3,036 | 38.8 |
| | Whig | Henry Cavendish | 2,839 | 36.3 |
| | Tory | Roger Gresley | 1,952 | 24.9 |
| Majority | Majority | Majority | 887 | 11.4 |
| Turnout | Turnout | Turnout | 4,789 | 86.4 |
| Registered electors | Registered electors | Registered electors | 5,541 | |
| | Whig win (new seat) | Whig win (new seat) | Whig win (new seat) | Whig win (new seat) |
| | Whig win (new seat) | Whig win (new seat) | Whig win (new seat) | Whig win (new seat) |