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South Northamptonshire — UK General Election Results

Compiled by EveryElectionResult.com's data team · Last updated 2026-08-30

South Northamptonshire was won by Conservative at the 2024 general election, with a majority of 3,687 votes over Labour. This page covers every general election in South Northamptonshire from 1832 to 2024.

This constituency elected more than one MP at once in some years. Before the Redistribution of Seats Act 1885 (and in a shrinking number of boroughs through 1948), most UK constituencies elected two or more MPs together by "multi-member plurality" (block vote): each elector could cast one vote per available seat, and the top vote-getters overall were all elected. In those elections below, "Elected" lists every MP returned, "Votes" is the count that secured the last seat, and "Majority" is the gap between that seat and the first candidate who missed out.

Full Election History, 1832–2024

Election Elected Votes Vote Share Runner-up Majority Turnout
1832 William Ralph Cartwright (Conservative); John Charles Spencer (Whig) Elected unopposed — no other candidate stood, no vote count on record 0.0%
1835 William Ralph Cartwright (Conservative); Charles Knightley (Conservative) Elected unopposed — no other candidate stood, no vote count on record 0.0%
1837 William Ralph Cartwright (Conservative); Charles Knightley (Conservative) Elected unopposed — no other candidate stood, no vote count on record 0.0%
1841 William Ralph Cartwright (Conservative); Charles Knightley (Conservative) 2,324 42.8% (top seat) Henry FitzRoy (Whig) 1,399 (24.6 pts) 61.9%
1847 Charles Knightley (Conservative); Richard Henry Richard Howard-Vyse (Conservative) 2,064 39.2% (top seat) Anthony Henley Henley (Whig) 604 (10.4 pts) 61.3%
1852 Richard Henry Richard Howard-Vyse (Conservative); Rainald Knightley (Conservative) 1,833 47.9% (top seat) John Houghton (Whig) 1,669 (43.6 pts) 41.9%
1857 John Poyntz Spencer (Whig); Rainald Knightley (Conservative) 1,932 37.4% (top seat) Richard Henry Richard Howard-Vyse (Conservative) 339 (6.0 pts) 60.2%
1859 Rainald Knightley (Conservative); Henry Cartwright (Conservative) Elected unopposed — no other candidate stood, no vote count on record 0.0%
1865 Rainald Knightley (Conservative); Henry Cartwright (Conservative) 2,092 34.7% (top seat) Frederick John FitzRoy (Liberal) 38 (0.6 pts) 60.0%
1868 Rainald Knightley (Conservative); Fairfax William Cartwright (Conservative) 2,505 34.4% (top seat) Frederick John FitzRoy (Liberal) 200 (2.7 pts) 57.8%
1874 Fairfax William Cartwright (Conservative); Rainald Knightley (Conservative) Elected unopposed — no other candidate stood, no vote count on record 0.0%
1880 Fairfax William Cartwright (Conservative); Rainauld Knightley (Conservative) Elected unopposed — no other candidate stood, no vote count on record 0.0%
1885 Rainald Knightley (Conservative) 4,074 50.4% Maurice Fitzgerald (Liberal) 62 (0.8 pts) 83.9%
1886 Rainald Knightley (Conservative) 4,003 52.1% James Morse Carmichael (Liberal) 316 (4.1 pts) 79.8%
1892 David Charles Guthrie (Liberal) 3,930 50.3% Thomas Robert Brooke Leslie-Melville-Cartwright (Conservative) 48 (0.6 pts) 84.4%
1895 Edward Sholto Douglas-Pennant (Conservative) 4,553 57.8% David Charles Guthrie (Liberal) 1,229 (15.6 pts) 86.2%
1900 Edward Algernon FitzRoy (Conservative) 4,174 56.9% Thomas Newcomen Archibald Grove (Liberal) 1,008 (13.7 pts) 81.8%
1906 Thomas Newcomen Archibald Grove (Liberal) 4,136 52.0% Charles Douglas-Pennant (Conservative) 322 (4.0 pts) 88.1%
Dec 1910 Edward Algernon FitzRoy (Conservative) 4,340 53.1% Arthur Augustus Thomas (Liberal) 513 (6.3 pts) 87.9%
Jan 1910 Edward Algernon FitzRoy (Conservative) 4,565 53.6% Frederick George Kellaway (Liberal) 610 (7.2 pts) 91.7%
1950 Reginald Edward Manningham-Buller (Conservative) 18,612 47.6% Dennis Webb (Labour) 1,760 (4.5 pts) 87.1%
1951 Reginald Edward Manningham-Buller (Conservative) 21,282 53.6% Dennis Webb (Labour) 2,848 (7.2 pts) 85.9%
1955 Sir Reginald Edward Manningham-Buller (Conservative) 21,497 55.4% Ronald Howard Lewis (Labour) 4,158 (10.7 pts) 81.6%
1959 Sir Reginald Edward Manningham-Buller (Conservative) 24,226 57.0% Arthur Richardson (Labour) 5,934 (14.0 pts) 82.7%
1964 Albert Arthur Jones (Conservative) 24,823 54.3% Ivor Wilde (Labour) 3,907 (8.5 pts) 83.0%
1966 Albert Jones (Conservative) 25,023 52.8% Graham Ridge (Labour) 2,691 (5.7 pts) 82.2%
1970 Albert Jones (Conservative) 29,070 51.2% Gordon Roberts (Labour) 7,939 (14.0 pts) 77.8%
2010 Andrea Leadsom (Conservative) 33,081 55.2% Scott Collins (Liberal Democrat) 20,478 (34.2 pts) 73.4%
2015 Andrea Leadsom (Conservative) 36,607 60.1% Lucy Mills (Labour) 26,416 (43.4 pts) 71.2%
2017 Andrea Leadsom (Conservative) 40,599 62.5% Sophie Johnson (Labour) 22,840 (35.1 pts) 75.9%
2019 Andrea Leadsom (Conservative) 41,755 62.4% Gen Kitchen (Labour) 27,761 (41.5 pts) 73.9%
2024 Sarah Bool (Conservative) 19,191 35.7% Rufia Ashraf (Labour) 3,687 (6.9 pts) 68.9%

Full Result Breakdown by Election

1832 (2 seats)

CandidatePartyVotesShareElected
William Ralph Cartwright Conservative Unopposed Yes
John Charles Spencer Whig Unopposed Yes

1835 (2 seats)

CandidatePartyVotesShareElected
William Ralph Cartwright Conservative Unopposed Yes
Charles Knightley Conservative Unopposed Yes

1837 (2 seats)

CandidatePartyVotesShareElected
William Ralph Cartwright Conservative Unopposed Yes
Charles Knightley Conservative Unopposed Yes

1841 (2 seats)

CandidatePartyVotesShareElected
William Ralph Cartwright Conservative 2,43642.8% Yes
Charles Knightley Conservative 2,32440.9% Yes
Henry FitzRoy Whig 92516.3% No

1847 (2 seats)

CandidatePartyVotesShareElected
Charles Knightley Conservative 2,27239.2% Yes
Richard Henry Richard Howard-Vyse Conservative 2,06435.6% Yes
Anthony Henley Henley Whig 1,46025.2% No

1852 (2 seats)

CandidatePartyVotesShareElected
Richard Henry Richard Howard-Vyse Conservative 1,83347.9% Yes
Rainald Knightley Conservative 1,83347.9% Yes
John Houghton Whig 1644.3% No

1857 (2 seats)

CandidatePartyVotesShareElected
John Poyntz Spencer Whig 2,10737.4% Yes
Rainald Knightley Conservative 1,93234.3% Yes
Richard Henry Richard Howard-Vyse Conservative 1,59328.3% No

1859 (2 seats)

CandidatePartyVotesShareElected
Rainald Knightley Conservative Unopposed Yes
Henry Cartwright Conservative Unopposed Yes

1865 (2 seats)

CandidatePartyVotesShareElected
Rainald Knightley Conservative 2,20634.7% Yes
Henry Cartwright Conservative 2,09232.9% Yes
Frederick John FitzRoy Liberal 2,05432.3% No

1868 (2 seats)

CandidatePartyVotesShareElected
Rainald Knightley Conservative 2,52234.4% Yes
Fairfax William Cartwright Conservative 2,50534.2% Yes
Frederick John FitzRoy Liberal 2,30531.4% No

1874 (2 seats)

CandidatePartyVotesShareElected
Fairfax William Cartwright Conservative Unopposed Yes
Rainald Knightley Conservative Unopposed Yes

1880 (2 seats)

CandidatePartyVotesShareElected
Fairfax William Cartwright Conservative Unopposed Yes
Rainauld Knightley Conservative Unopposed Yes

1885

CandidatePartyVotesShareElected
Rainald Knightley Conservative 4,07450.4% Yes
Maurice Fitzgerald Liberal 4,01249.6% No

1886

CandidatePartyVotesShareElected
Rainald Knightley Conservative 4,00352.1% Yes
James Morse Carmichael Liberal 3,68747.9% No

1892

CandidatePartyVotesShareElected
David Charles Guthrie Liberal 3,93050.3% Yes
Thomas Robert Brooke Leslie-Melville-Cartwright Conservative 3,88249.7% No

1895

CandidatePartyVotesShareElected
Edward Sholto Douglas-Pennant Conservative 4,55357.8% Yes
David Charles Guthrie Liberal 3,32442.2% No

1900

CandidatePartyVotesShareElected
Edward Algernon FitzRoy Conservative 4,17456.9% Yes
Thomas Newcomen Archibald Grove Liberal 3,16643.1% No

1906

CandidatePartyVotesShareElected
Thomas Newcomen Archibald Grove Liberal 4,13652.0% Yes
Charles Douglas-Pennant Conservative 3,81448.0% No

Dec 1910

CandidatePartyVotesShareElected
Edward Algernon FitzRoy Conservative 4,34053.1% Yes
Arthur Augustus Thomas Liberal 3,82746.9% No

Jan 1910

CandidatePartyVotesShareElected
Edward Algernon FitzRoy Conservative 4,56553.6% Yes
Frederick George Kellaway Liberal 3,95546.4% No

1950

CandidatePartyVotesShareElected
Reginald Edward Manningham-Buller Conservative 18,61247.6% Yes
Dennis Webb Labour 16,85243.1% No
Llewellyn Evans Liberal 3,6209.3% No

1951

CandidatePartyVotesShareElected
Reginald Edward Manningham-Buller Conservative 21,28253.6% Yes
Dennis Webb Labour 18,43446.4% No

1955

CandidatePartyVotesShareElected
Sir Reginald Edward Manningham-Buller Conservative 21,49755.4% Yes
Ronald Howard Lewis Labour 17,33944.6% No

1959

CandidatePartyVotesShareElected
Sir Reginald Edward Manningham-Buller Conservative 24,22657.0% Yes
Arthur Richardson Labour 18,29243.0% No

1964

CandidatePartyVotesShareElected
Albert Arthur Jones Conservative 24,82354.3% Yes
Ivor Wilde Labour 20,91645.7% No

1966

CandidatePartyVotesShareElected
Albert Jones Conservative 25,02352.8% Yes
Graham Ridge Labour 22,33247.2% No

1970

CandidatePartyVotesShareElected
Albert Jones Conservative 29,07051.2% Yes
Gordon Roberts Labour 21,13137.2% No
CA Peter Smout Liberal 6,62611.7% No

2010

CandidatePartyVotesShareElected
Andrea Leadsom Conservative 33,08155.2% Yes
Scott Collins Liberal Democrat 12,60321.0% No
Matthew May Labour 10,38017.3% No
Barry Mahoney UKIP 2,4064.0% No
Tony Tappy English Democrats 7351.2% No
Marcus Rock Green 6851.1% No

2015

CandidatePartyVotesShareElected
Andrea Leadsom Conservative 36,60760.1% Yes
Lucy Mills Labour 10,19116.7% No
Roger Clark UKIP 8,20413.5% No
Tom Snowdon Liberal Democrat 3,6135.9% No
Damon Boughen Green 2,2473.7% No

2017

CandidatePartyVotesShareElected
Andrea Leadsom Conservative 40,59962.5% Yes
Sophie Johnson Labour 17,75927.3% No
Chris Lofts Liberal Democrat 3,6235.6% No
Nigel Wickens UKIP 1,3632.1% No
Denise Donaldson Green 1,3572.1% No
Josh Phillips Independent 2970.5% No

2019

CandidatePartyVotesShareElected
Andrea Leadsom Conservative 41,75562.4% Yes
Gen Kitchen Labour 13,99420.9% No
Chris Lofts Liberal Democrat 7,89111.8% No
Denise Donaldson Green 2,6343.9% No
Josh Phillips Independent 4630.7% No
Stuart McCutcheon Independent 1710.3% No

2024

CandidatePartyVotesShareElected
Sarah Bool Conservative 19,19135.7% Yes
Rufia Ashraf Labour 15,50428.9% No
Paul Hogan Reform UK 8,96216.7% No
Stewart Tolley Liberal Democrat 4,9899.3% No
Emmie Williamson Green 3,0405.7% No
Ian McCord Independent 1,5562.9% No
Mick Stott Workers Party of Britain 2460.5% No
Stuart Robert Independent 2090.4% No

Margin Over Time

Winning margin (percentage points) at each election, coloured by the winning party.

1841: Conservative margin 24.6 pts 1847: Conservative margin 10.4 pts 1852: Conservative margin 43.6 pts 1857: Whig margin 6.0 pts 1865: Conservative margin 0.6 pts 1868: Conservative margin 2.7 pts 1885: Conservative margin 0.8 pts 1886: Conservative margin 4.1 pts 1892: Liberal margin 0.6 pts 1895: Conservative margin 15.6 pts 1900: Conservative margin 13.7 pts 1906: Liberal margin 4.0 pts Dec 1910: Conservative margin 6.3 pts Jan 1910: Conservative margin 7.2 pts 1950: Conservative margin 4.5 pts 1951: Conservative margin 7.2 pts 1955: Conservative margin 10.7 pts 1959: Conservative margin 14.0 pts 1964: Conservative margin 8.5 pts 1966: Conservative margin 5.7 pts 1970: Conservative margin 14.0 pts 2010: Conservative margin 34.2 pts 2015: Conservative margin 43.4 pts 2017: Conservative margin 35.1 pts 2019: Conservative margin 41.5 pts 2024: Conservative margin 6.9 pts 1841 1847 1852 1857 1865 1868 1885 1886 1892 1895 1900 1906 Dec 1910 Jan 1910 1950 1951 1955 1959 1964 1966 1970 2010 2015 2017 2019 2024

Trend

South Northamptonshire has been contested at 32 general elections on record since 1832. Parties that have won a seat here over that span: Conservative, Whig, Liberal.

Frequently Asked Questions

Who won South Northamptonshire in the 2024 general election?

Conservative won South Northamptonshire in 2024 with 19,191 votes (35.7%), a majority of 3,687 votes over Labour in second place.

Which parties have won South Northamptonshire since 1832?

Since 1832, South Northamptonshire has been won by: Conservative, Liberal, Whig.

What was the closest result in South Northamptonshire?

The closest result on record for South Northamptonshire was 1865, when Conservative beat Liberal by just 38 votes (0.6 percentage points).

Did South Northamptonshire ever elect more than one MP at a time?

Yes -- like most UK constituencies before the Redistribution of Seats Act 1885, South Northamptonshire elected multiple MPs at once in some elections on this page (a system called multi-member plurality, or 'block vote'), each voter casting one vote per available seat.

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