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Portsmouth South — UK General Election Results

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

Portsmouth South was won by Labour at the 2024 general election, with a majority of 13,155 votes over Reform UK. This page covers every general election in Portsmouth South from 1918 to 2024.

Full Election History, 1918–2024

Election Elected Votes Vote Share Runner-up Majority Turnout
1918 Herbert Robin Cayzer (Unionist) 15,842 68.3% Alison Vickers Garland (Liberal) 11,559 (49.8 pts) 62.0%
1922 Herbert Robin Cayzer (Unionist) 19,960 68.7% Henry Merrick Lawson (Liberal) 10,880 (37.5 pts) 73.7%
1923 Herbert Robin Cayzer (Unionist) 16,625 56.0% Jessie Stephen (Labour) 9,237 (31.1 pts) 72.7%
1924 Herbert Robin Cayzer (Unionist) 22,423 73.0% Jessie Stephen (Labour) 14,113 (45.9 pts) 74.2%
1929 Herbert Robin Cayzer (Unionist) 15,068 36.8% Jessie Stephen (Labour) 4,941 (12.1 pts) 75.1%
1931 Herbert Robin Cayzer (Conservative) 32,634 80.9% William James Beck (Labour) 24,919 (61.8 pts) 72.7%
1935 Herbert Robin Cayzer (Conservative) 27,416 75.2% John Fawcett (Labour) 18,373 (50.4 pts) 66.9%
1945 Jocelyn Morton Lucas (Conservative) 15,810 55.3% Jack Francis Blitz (Labour) 3,027 (10.6 pts) 74.9%
1950 Jocelyn Morton Lucas (Conservative) 31,124 64.0% Leslie Charles Merrion (Labour) 13,579 (27.9 pts) 83.5%
1951 Jocelyn Morton Lucas (Conservative) 30,548 63.8% Douglas Wallace (Labour) 13,198 (27.6 pts) 80.8%
1955 Jocelyn Morton Lucas (Conservative) 27,887 67.2% Lawrence Carroll (Labour) 14,287 (34.4 pts) 72.4%
1959 Sir Jocelyn Lucas (Conservative) 27,892 70.0% Frank Towell (Labour) 15,913 (39.9 pts) 72.3%
1964 Sir Jocelyn Lucas (Conservative) 24,387 63.7% Richard Wallis Speaight Pryke (Labour) 10,483 (27.4 pts) 71.0%
1966 Bonner Pink (Conservative) 22,713 60.6% Patten Smith (Labour) 7,975 (21.3 pts) 70.7%
1970 Bonner Pink (Conservative) 23,962 63.4% Albert Frederick William White (Labour) 10,115 (26.8 pts) 67.4%
Feb 1974 Bonner Pink (Conservative) 26,824 50.3% Sydney Lloyd (Labour) 10,982 (20.6 pts) 75.8%
Oct 1974 Bonner Pink (Conservative) 23,379 47.6% Anthony Michael Halmos (Labour) 8,071 (16.4 pts) 69.4%
1979 Bonner Pink (Conservative) 26,835 54.7% Sally Thomas (Labour) 11,529 (23.5 pts) 72.9%
1983 Bonner Pink (Conservative) 25,101 50.0% Mike Hancock (Social Democratic Party) 12,335 (24.6 pts) 67.3%
1987 David Martin (Conservative) 23,534 43.3% Mike Hancock (Social Democratic Party) 205 (0.4 pts) 71.3%
1992 David Pattison Martin (Conservative) 22,798 42.5% Mike Hancock (Liberal Democrat) 242 (0.4 pts) 69.1%
1997 Mike Hancock (Liberal Democrat) 20,421 39.5% David Martin (Conservative) 4,327 (8.4 pts) 64.2%
2001 Mike Hancock (Liberal Democrat) 17,490 44.6% Philip Warr (Conservative) 6,093 (15.5 pts) 50.9%
2005 Mike Hancock (Liberal Democrat) 17,047 42.2% Caroline Dinenage (Conservative) 3,362 (8.3 pts) 56.9%
2010 Mike Hancock (Liberal Democrat) 18,921 45.9% Flick Drummond (Conservative) 5,200 (12.6 pts) 59.0%
2015 Flick Drummond (Conservative) 14,585 34.8% Gerald Vernon-Jackson (Liberal Democrat) 5,241 (12.5 pts) 58.8%
2017 Stephen Morgan (Labour) 18,290 41.0% Flick Drummond (Conservative) 1,554 (3.5 pts) 64.0%
2019 Stephen Morgan (Labour) 23,068 48.6% Donna Jones (Conservative) 5,363 (11.3 pts) 64.1%
2024 Stephen Morgan (Labour) 18,857 48.4% Mark Zimmer (Reform UK) 13,155 (33.8 pts) 53.1%

Full Result Breakdown by Election

1918

CandidatePartyVotesShareElected
Herbert Robin Cayzer Unionist 15,84268.3% Yes
Alison Vickers Garland Liberal 4,28318.5% No
James Lacey Labour 3,07013.2% No

1922

CandidatePartyVotesShareElected
Herbert Robin Cayzer Unionist 19,96068.7% Yes
Henry Merrick Lawson Liberal 9,08031.3% No

1923

CandidatePartyVotesShareElected
Herbert Robin Cayzer Unionist 16,62556.0% Yes
Jessie Stephen Labour 7,38824.9% No
Sidney Robert Drury-Lowe Liberal 5,69819.2% No

1924

CandidatePartyVotesShareElected
Herbert Robin Cayzer Unionist 22,42373.0% Yes
Jessie Stephen Labour 8,31027.0% No

1929

CandidatePartyVotesShareElected
Herbert Robin Cayzer Unionist 15,06836.8% Yes
Jessie Stephen Labour 10,12724.8% No
Frank John Privett Independent Unionist 9,50523.2% No
Charles Mark Clement Rudkin Liberal 6,21415.2% No

1931

CandidatePartyVotesShareElected
Herbert Robin Cayzer Conservative 32,63480.9% Yes
William James Beck Labour 7,71519.1% No

1935

CandidatePartyVotesShareElected
Herbert Robin Cayzer Conservative 27,41675.2% Yes
John Fawcett Labour 9,04324.8% No

1945

CandidatePartyVotesShareElected
Jocelyn Morton Lucas Conservative 15,81055.3% Yes
Jack Francis Blitz Labour 12,78344.7% No

1950

CandidatePartyVotesShareElected
Jocelyn Morton Lucas Conservative 31,12464.0% Yes
Leslie Charles Merrion Labour 17,54536.0% No

1951

CandidatePartyVotesShareElected
Jocelyn Morton Lucas Conservative 30,54863.8% Yes
Douglas Wallace Labour 17,35036.2% No

1955

CandidatePartyVotesShareElected
Jocelyn Morton Lucas Conservative 27,88767.2% Yes
Lawrence Carroll Labour 13,60032.8% No

1959

CandidatePartyVotesShareElected
Sir Jocelyn Lucas Conservative 27,89270.0% Yes
Frank Towell Labour 11,97930.0% No

1964

CandidatePartyVotesShareElected
Sir Jocelyn Lucas Conservative 24,38763.7% Yes
Richard Wallis Speaight Pryke Labour 13,90436.3% No

1966

CandidatePartyVotesShareElected
Bonner Pink Conservative 22,71360.6% Yes
Patten Smith Labour 14,73839.4% No

1970

CandidatePartyVotesShareElected
Bonner Pink Conservative 23,96263.4% Yes
Albert Frederick William White Labour 13,84736.6% No

Feb 1974

CandidatePartyVotesShareElected
Bonner Pink Conservative 26,82450.3% Yes
Sydney Lloyd Labour 15,84229.7% No
John Michael Williams Liberal 10,30719.3% No
Adrian David Rifkin Communist Party of England (Marxist-Leninist) 3940.7% No

Oct 1974

CandidatePartyVotesShareElected
Bonner Pink Conservative 23,37947.6% Yes
Anthony Michael Halmos Labour 15,30831.2% No
Michael Barry Tribe Liberal 9,80720.0% No
Adrian David Rifkin Communist Party of England (Marxist-Leninist) 6121.2% No

1979

CandidatePartyVotesShareElected
Bonner Pink Conservative 26,83554.7% Yes
Sally Thomas Labour 15,30631.2% No
Jack Raphael Wallis Liberal 6,48713.2% No
William Victor Donkin National Front 4570.9% No

1983

CandidatePartyVotesShareElected
Bonner Pink Conservative 25,10150.0% Yes
Mike Hancock Social Democratic Party 12,76625.4% No
Sally Thomas Labour 11,32422.6% No
Alan Evens Independent Liberal 5541.1% No
Gordon Knight National Front 2790.6% No
David William Fry Traditional English Food 1720.3% No

1987

CandidatePartyVotesShareElected
David Martin Conservative 23,53443.3% Yes
Mike Hancock Social Democratic Party 23,32942.9% No
Keith Gardiner Labour 7,04713.0% No
Martyn Hughes 657 Party 4550.8% No

1992

CandidatePartyVotesShareElected
David Pattison Martin Conservative 22,79842.5% Yes
Mike Hancock Liberal Democrat 22,55642.0% No
Syd Rapson Labour 7,85714.6% No
Aleksander Zivkovic Green 3490.7% No
William Trend Natural Law 910.2% No

1997

CandidatePartyVotesShareElected
Mike Hancock Liberal Democrat 20,42139.5% Yes
David Martin Conservative 16,09431.1% No
Alan Burnett Labour 13,08625.3% No
Christopher Trim Referendum Party 1,6293.2% No
John Thompson Liberal 1840.4% No
Jill Evans UKIP 1410.3% No
William Trend Natural Law 1400.3% No

2001

CandidatePartyVotesShareElected
Mike Hancock Liberal Democrat 17,49044.6% Yes
Philip Warr Conservative 11,39729.1% No
Graham Heaney Labour 9,36123.9% No
Jonathan Molyneux Socialist Alliance 6471.6% No
Michael Tarrant UKIP 3210.8% No

2005

CandidatePartyVotesShareElected
Mike Hancock Liberal Democrat 17,04742.2% Yes
Caroline Dinenage Conservative 13,68533.9% No
Mark Button Labour 8,71421.6% No
Dennis Pierson UKIP 9282.3% No

2010

CandidatePartyVotesShareElected
Mike Hancock Liberal Democrat 18,92145.9% Yes
Flick Drummond Conservative 13,72133.3% No
John Ferrett Labour 5,64013.7% No
Christopher Martin UKIP 8762.1% No
Geoff Crompton BNP 8732.1% No
Tim Dawes Green 7161.7% No
Ian DuCane English Democrats 4001.0% No
Les Cummings The Justice & Anti-Corruption Party 1170.3% No

2015

CandidatePartyVotesShareElected
Flick Drummond Conservative 14,58534.8% Yes
Gerald Vernon-Jackson Liberal Democrat 9,34422.3% No
Sue Castillon Labour 8,18419.5% No
Steve Harris UKIP 5,59513.4% No
Ian McCulloch Green 3,1457.5% No
Mike Hancock Independent 7161.7% No
Sean Hoyle Trade Unionist and Socialist Coalition 2350.6% No
Don Jerrard The Justice & Anti-Corruption Party 990.2% No

2017

CandidatePartyVotesShareElected
Stephen Morgan Labour 18,29041.0% Yes
Flick Drummond Conservative 16,73637.6% No
Robert Vernon-Jackson Liberal Democrat 7,69917.3% No
Kevan Chippindall-Higgin UKIP 1,1292.5% No
Ian McCulloch Green 7121.6% No

2019

CandidatePartyVotesShareElected
Stephen Morgan Labour 23,06848.6% Yes
Donna Jones Conservative 17,70537.3% No
Gerald Vernon-Jackson Liberal Democrat 5,41811.4% No
John Kennedy Brexit Party 9942.1% No
Steven George The Justice & Anti-Corruption Party 2400.5% No

2024

CandidatePartyVotesShareElected
Stephen Morgan Labour 18,85748.4% Yes
Mark Zimmer Reform UK 5,70214.6% No
Signe Biddle Conservative 5,64314.5% No
Charlie Murphy Liberal Democrat 4,88612.6% No
Elliott Lee Green 3,1078.0% No
Jacob Short Portsmouth Independent Party 7331.9% No

Margin Over Time

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

1918: Unionist margin 49.8 pts 1922: Unionist margin 37.5 pts 1923: Unionist margin 31.1 pts 1924: Unionist margin 45.9 pts 1929: Unionist margin 12.1 pts 1931: Conservative margin 61.8 pts 1935: Conservative margin 50.4 pts 1945: Conservative margin 10.6 pts 1950: Conservative margin 27.9 pts 1951: Conservative margin 27.6 pts 1955: Conservative margin 34.4 pts 1959: Conservative margin 39.9 pts 1964: Conservative margin 27.4 pts 1966: Conservative margin 21.3 pts 1970: Conservative margin 26.8 pts Feb 1974: Conservative margin 20.6 pts Oct 1974: Conservative margin 16.4 pts 1979: Conservative margin 23.5 pts 1983: Conservative margin 24.6 pts 1987: Conservative margin 0.4 pts 1992: Conservative margin 0.4 pts 1997: Liberal Democrat margin 8.4 pts 2001: Liberal Democrat margin 15.5 pts 2005: Liberal Democrat margin 8.3 pts 2010: Liberal Democrat margin 12.6 pts 2015: Conservative margin 12.5 pts 2017: Labour margin 3.5 pts 2019: Labour margin 11.3 pts 2024: Labour margin 33.8 pts 1918 1922 1923 1924 1929 1931 1935 1945 1950 1951 1955 1959 1964 1966 1970 Feb 1974 Oct 1974 1979 1983 1987 1992 1997 2001 2005 2010 2015 2017 2019 2024

Trend

Portsmouth South has been contested at 29 general elections on record since 1918. Parties that have won a seat here over that span: Unionist, Conservative, Liberal Democrat, Labour.

Frequently Asked Questions

Who won Portsmouth South in the 2024 general election?

Labour won Portsmouth South in 2024 with 18,857 votes (48.4%), a majority of 13,155 votes over Reform UK in second place.

Which parties have won Portsmouth South since 1918?

Since 1918, Portsmouth South has been won by: Conservative, Labour, Liberal Democrat, Unionist.

What was the closest result in Portsmouth South?

The closest result on record for Portsmouth South was 1987, when Conservative beat Social Democratic Party by just 205 votes (0.4 percentage points).

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