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Portsmouth South

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Data Last Updated: 7 August 2025
Application Last Amended: 20 July 2024
This website is considered to be an archive in the public interest.

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14 December 1918		23,195/37,427	61.97
Herbert Robin Cayzer	Conservative & Unionist Party - Coalition	15,842	68.30
Alison Vickers Garland	Liberal Party	4,283	18.47
James Philip Durnford Lacey	Labour Party	3,070	13.24
Majority		11,559	49.83

15 November 1922		29,040/39,426	73.66
Herbert Robin Cayzer	Conservative & Unionist Party	19,960	68.73
Sir Henry Merrick Lawson	Liberal Party	9,080	31.27
Majority		10,880	37.47

27 November 1922 Resignation of Herbert Cayzer. (Chiltern Hundreds)

13 December 1922		22,735/39,426	57.66
Rt Hon Leslie Orme Wilson	Conservative & Unionist Party	14,301	62.90
G C Thomas	Independent Conservative	8,434	37.10
Majority		5,867	25.81

Rt Hon Leslie Wilson was Parliamentary Secretary to the Treasury.

26 July 1923 Resignation of Rt Hon Leslie Wilson on appointment as Governor of Bombay. (Northstead)

13 August 1923		21,647/39,426	54.91
Herbert Robin Cayzer	Conservative & Unionist Party	11,884	54.90
Sir Henry Merrick Lawson	Liberal Party	9,763	45.10
Majority		2,121	9.80

6 December 1923		29,711/40,854	72.72
Herbert Robin Cayzer	Conservative & Unionist Party	16,625	55.96
Jessie Stephen	Labour Party	7,388	24.87
Sidney Robert Drury-Lowe	Liberal Party	5,698	19.18
Majority		9,237	31.09

29 October 1924		30,733/41,417	74.20
Sir Herbert Robin Cayzer, Bt	Conservative & Unionist Party	22,423	72.96
Jessie Stephen	Labour Party	8,310	27.04
Majority		14,113	45.92

30 May 1929		40,914/54,449	75.14
Sir Herbert Robin Cayzer, Bt	Conservative & Unionist Party	15,068	36.83
Jessie Stephen	Labour Party	10,127	24.75
Frank John Privett	Independent Conservative	9,505	23.23
Charles Mark Clement Rudkin	Liberal Party	6,214	15.19
Majority		4,941	12.08

Frank Privett was the nominee of the Portsmouth South Constitutional Association which was formed in April 1929 with the object of promoting his candidature.

27 October 1931		40,349/55,488	72.72
Sir Herbert Robin Cayzer, Bt	Conservative & Unionist Party	32,634	80.88
William James Beck	Labour Party	7,715	19.12
Majority		24,919	61.76

14 November 1935		36,459/54,463	66.94
Sir Herbert Robin Cayzer, Bt	Conservative & Unionist Party	27,416	75.20
John William Fawcett	Labour Party	9,043	24.80
Majority		18,373	50.39

8 June 1939 Elevation of Sir Herbert Cayzer, Bt to the Peerage - Baron Rotherwick.

12 July 1939
Sir Jocelyn Morton Lucas, Bt	Conservative & Unionist Party	Unopposed

5 July 1945		28,593/38,150	74.95
Sir Jocelyn Morton Lucas, Bt	Conservative & Unionist Party	15,810	55.29
Jack Francis Blitz	Labour Party	12,783	44.71
Majority		3,027	10.59

Boundary Change
23 February 1950		48,669/58,288	83.50
Sir Jocelyn Morton Lucas, Bt	Conservative & Unionist Party	31,124	63.95
Leslie Charles Merrion	Labour Party	17,545	36.05
Majority		13,579	27.90

25 October 1951		47,898/59,306	80.76
Sir Jocelyn Morton Lucas, Bt	Conservative & Unionist Party	30,548	63.78
Douglas Stuart Wallace	Labour Party	17,350	36.22
Majority		13,198	27.55

Minor Boundary Change
26 May 1955		41,487/57,311	72.39
Sir Jocelyn Morton Lucas, Bt	Conservative & Unionist Party	27,887	67.22
Lawrence William Carroll	Labour Party	13,600	32.78
Majority		14,287	34.44

8 October 1959		39,871/55,121	72.33
Sir Jocelyn Morton Lucas, Bt	Conservative & Unionist Party	27,892	69.96
Frank Towell	Labour Party	11,979	30.04
Majority		15,913	39.91

15 October 1964		38,291/53,915	71.02
Sir Jocelyn Morton Lucas, Bt	Conservative & Unionist Party	24,387	63.69
Richard Wallis Speaight Pryke	Labour Party	13,904	36.31
Majority		10,483	27.38

31 March 1966		37,451/52,941	70.74
Ralph Bonner Pink	Conservative & Unionist Party	22,713	60.65
Patten Bridge Smith	Labour Party	14,738	39.35
Majority		7,975	21.29

18 June 1970		37,809/56,093	67.40
Ralph Bonner Pink	Conservative & Unionist Party	23,962	63.38
Albert Frederick William White	Labour Party	13,847	36.62
Majority		10,115	26.75

Major Boundary Change
28 February 1974		53,367/70,366	75.84
Ralph Bonner Pink	Conservative & Unionist Party	26,824	50.26
Sydney Lloyd	Labour Party	15,842	29.69
John Michael Williams	Liberal Party	10,307	19.31
Adrian David Rifkin	Communist Party of England	394	0.74
Majority		10,982	20.58

10 October 1974		49,106/70,761	69.40
Ralph Bonner Pink	Conservative & Unionist Party	23,379	47.61
Anthony Michael Halmos	Labour Party	15,308	31.17
Michael Barry Tribe	Liberal Party	9,807	19.97
Adrian David Rifkin	Communist Party of England	612	1.25
Majority		8,071	16.44

3 May 1979		49,085/67,346	72.88
Ralph Bonner Pink	Conservative & Unionist Party	26,835	54.67
Sally Theresa Thomas	Labour Party	15,306	31.18
Jack Raphael Wallis	Liberal Party	6,487	13.22
William Victor Donkin	National Front	457	0.93
Majority		11,529	23.49

Major Boundary Change
9 June 1983		50,196/75,167	66.78
Ralph Bonner Pink	Conservative & Unionist Party	25,101	50.01
Michael Thomas Hancock	Social Democratic Party in Alliance	12,766	25.43
Sally Theresa Thomas	Labour Party	11,324	22.56
Alan John Evens	Independent Liberal	554	1.10
Gordon Anthony Knight	National Front	279	0.56
David William Fry	Independent	172	0.34
Majority		12,335	24.57

6 May 1984 Death of Ralph Bonner Pink.

14 June 1984		40,883/75,167	54.39
Michael Thomas Hancock	Social Democratic Party in Alliance	15,358	37.57
Patrick Robert John Rock	Conservative & Unionist Party	14,017	34.29
Sally Theresa Thomas	Labour Party	10,846	26.53
Gordon Anthony Knight	National Front	226	0.55
Terence Albert Frank Mitchell	Ecology Party	190	0.46
Alan J Evens	Independent	113	0.28
Thomas Arthur Layton	Independent	50	0.12
Anthony N Andrews	Independent	42	0.10
Peter R Smith	Independent	41	0.10
Majority		1,341	3.28

11 June 1987		54,365/76,814	70.77
David John Pattison Martin	Conservative & Unionist Party	23,534	43.29
Michael Thomas Hancock	Social Democratic Party in Alliance	23,329	42.91
Keith Gardiner	Labour Party	7,047	12.96
Martyn Ronald Hughes	6:57	455	0.84
Majority		205	0.38

9 April 1992		53,651/77,645	69.10
David John Pattison Martin	Conservative & Unionist Party	22,798	42.49
Michael Thomas Hancock	Liberal Democrats	22,556	42.04
Sydney Norman John Rapson	Labour Party	7,857	14.64
Aleksander Zivkovic	Green Party	349	0.65
William Arthur Trend	Natural Law Party	91	0.17
Majority		242	0.45

1 May 1997		51,695/80,514	64.21
Michael Thomas Hancock	Liberal Democrats	20,421	39.50
David John Pattison Martin	Conservative & Unionist Party	16,094	31.13
Dr Alan Dodds Burnett	Labour Party	13,086	25.31
Christopher Gregory Trim	Referendum Party	1,629	3.15
John Christopher Thompson	Official Liberal Party	184	0.36
Jill Irene Evans	UK Independence Party	141	0.27
William Arthur Treend	Natural Law Party	140	0.27
Majority		4,327	8.37

7 June 2001		39,215/77,095	50.87
Michael Thomas Hancock	Liberal Democrats	17,490	44.60
Philip Henry Warr	Conservative & Unionist Party	11,396	29.06
Graham Philip Heaney	Labour Party	9,361	23.87
Jonathan Christopher Molyneaux	Socialist Alliance	647	1.65
Michael Norman Alan Tarrant	UK Independence Party	321	0.82
Majority		6,094	15.54

5 May 2005		40,374/70,969	56.89
Michael Thomas Hancock	Liberal Democrats	17,047	42.22
Caroline Julia Dinenage	Conservative & Unionist Party	13,685	33.90
Mark Button	Labour Party	8,714	21.58
Dennis Alan Pierson	UK Independence Party	928	2.30
Majority		3,362	8.33

Minor Boundary Change
6 May 2010		41,264/69,693	59.21
Michael Thomas Hancock	Liberal Democrats	18,921	45.85
Felicia Jane Beatrix Drummond	Conservative & Unionist Party	13,721	33.25
John Ferrett	Labour Party	5,640	13.67
Christopher David Everest Martin	UK Independence Party	876	2.12
Geoff Crompton	British National Party	873	2.12
Timothy Morgan Dawes	Green Party	716	1.74
Ian Arthur DuCane	English Democrats Party	400	0.97
Les Cummings	Justice & Anti-Corruption	117	0.28
Majority		5,200	12.60

3 June 2013 Michael Hancock resigns the Liberal Democrat whip.

7 May 2015		41,903/71,639	58.49
Felicia Jane Beatrix Drummond	Conservative & Unionist Party	14,585	34.81
Sir Robert Gerald van Cortland Vernon-Jackson	Liberal Democrats	9,344	22.30
Susan Lynda Castillon	Labour Party	8,184	19.53
Stephen Andrew Harris	UK Independence Party	5,595	13.35
Ian David McCulloch	Green Party	3,145	7.51
Michael Thomas Hancock	Independent	716	1.71
Sean Hoyle	Trades Union & Socialist Coalition	235	0.56
Donald George Jerrard	Justice & Anti-Corru	99	0.24
Majority		5,241	12.51

8 June 2017		44,566/69,785	63.86
Stephen James Morgan	Labour Party	18,290	41.04
Felicia Jane Beatrix Drummond	Conservative & Unionist Party	16,736	37.55
Sir Robert Gerald van Cortland Vernon-Jackson	Liberal Democrats	7,699	17.28
Kevan Chippindall-Higgin	UK Independence Party	1,129	2.53
Ian McCulloch	Green Party	712	1.60
Majority		1,554	3.49

12 December 2019		47,425/74,186	63.93
Stephen James Morgan	Labour Party	23,068	48.64
Donna Jones	Conservative & Unionist Party	17,705	37.33
Sir Robert Gerald van Cortland Vernon-Jackson	Liberal Democrats	5,418	11.42
John Kennedy	Brexit Party	994	2.10
Steven George George	Justice & Anti-Corruption	240	0.51
Majority		5,363	11.31

4 July 2024		38,928/73,711	52.81
Stephen James Morgan	Labour Party	18,857	48.44
Mark Zimmer	Reform UK	5,702	14.65
Signe Andrea Biddle	Conservative & Unionist Party	5,643	14.50
Charles Scott Murphy	Liberal Democrats	4,886	12.55
Elliott Lee	Green Party	3,107	7.98
Jacob Lee Short	Portsmouth Ind	733	1.88
Majority		13,155	33.79