Portsmouth South - UK Parliament Constituency

Here are the most recent election results for the Portsmouth South constituency.

Note: Smaller parties may be omitted. The candidate with the largest vote who does not belong to one of the main parties is listed as 'Minor'. Votes listed for 'Other' are calculated by taking the votes from the main parties and 'Minor' away from the total votes cast.

Name	Portsmouth South
Region	South East
1st in 2024		Labour
2nd in 2024		Reform UK
Swing To Lose	16.90%
Next Election Prediction	View

Note: 'Swing To Lose' is the swing needed by the 2nd placed party against the 1st placed party to win the seat.

Electoral History

Election		Party
	Election 2024	Labour
	Election 2019 (New Boundaries)	Labour
	Election 2019	Labour
	Election 2017	Labour
	Election 2015	Conservative
	Election 2010	Liberal Democrat
	Election 2005 (New Boundaries)	Liberal Democrat
	Election 2005	Liberal Democrat
	Election 2001	Liberal Democrat
	Election 1997	Liberal Democrat
	Election 1992	Conservative
	Election 1987	Conservative
	Election 1983	Conservative
	Election 1979	Conservative
	Election 1974 (October)	Conservative
	Election 1974 (February)	Conservative

Election 2024

View full Election 2024 results.

Party		Votes	Percentage	Change
	Labour	18,857	48.44%	-0.20%
	Reform UK	5,702	14.65%	+12.55%
	Conservative	5,643	14.50%	-22.84%
	Liberal Democrat	4,886	12.55%	+1.13%
	Green	3,107	7.98%	N/A
	Minor	733	1.88%	N/A
Majority		13,155	33.79%
Turnout		38,928	52.81%	-11.06%
Electorate		73,711
Swing from LAB to REF			6.38%
Swing from CON to LAB			11.32%
Swing from CON to REF			17.69%
	Labour hold

Election 2019 (New Boundaries)

View full Election 2019 (New Boundaries) results.

Party		Votes	Percentage	Change
	Labour	23,068	48.64%	0.00%
	Conservative	17,705	37.33%	0.00%
	Liberal Democrat	5,418	11.42%	0.00%
	Reform UK	994	2.10%	N/A
	Minor	240	0.51%	N/A
Majority		5,363	11.31%
Turnout		47,425	63.87%	-0.06%
Electorate		74,253
Swing from CON to LAB			0.00%
Swing from LD to LAB			0.00%
Swing from LD to CON			0.00%
	Labour hold

Election 2019

View full Election 2019 results.

Party		Votes	Percentage	Change
	Labour	23,068	48.64%	+7.60%
	Conservative	17,705	37.33%	-0.22%
	Liberal Democrat	5,418	11.42%	-5.85%
	Brexit Party	994	2.10%	N/A
	Minor	240	0.51%	N/A
Majority		5,363	11.31%
Turnout		47,425	63.93%	+0.07%
Electorate		74,186
Swing from CON to LAB			3.91%
Swing from LD to LAB			6.73%
Swing from LD to CON			2.82%
	Labour hold

Election 2017

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Party		Votes	Percentage	Change
	Labour	18,290	41.04%	+21.51%
	Conservative	16,736	37.55%	+2.75%
	Liberal Democrat	7,699	17.28%	-5.02%
	UKIP	1,129	2.53%	-10.82%
	Green	712	1.60%	-5.91%
Majority		1,554	3.49%
Turnout		44,566	63.86%	+5.37%
Electorate		69,785
Swing from CON to LAB			9.38%
Swing from LD to LAB			13.27%
Swing from LD to CON			3.89%
	Labour gain from Conservative

Election 2015

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Party		Votes	Percentage	Change
	Conservative	14,585	34.81%	+1.55%
	Liberal Democrat	9,344	22.30%	-23.55%
	Labour	8,184	19.53%	+5.86%
	UKIP	5,595	13.35%	+11.23%
	Green	3,145	7.51%	+5.77%
	Minor	716	1.71%	N/A
	Others	334	0.80%	N/A
Majority		5,241	12.51%
Turnout		41,903	58.49%	-0.25%
Electorate		71,639
Swing from LD to CON			12.55%
Swing from CON to LAB			2.15%
Swing from LD to LAB			14.71%
	Conservative gain from Liberal Democrat

Election 2010

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Party		Votes	Percentage	Change
	Liberal Democrat	18,921	45.85%	+3.54%
	Conservative	13,721	33.25%	-0.26%
	Labour	5,640	13.67%	-8.58%
	UKIP	876	2.12%	N/A
	Minor	873	2.12%	N/A
	Green	716	1.74%	N/A
	English Democrat	400	0.97%	N/A
	Others	117	0.28%	N/A
Majority		5,200	12.60%
Turnout		41,264	58.75%	+1.82%
Electorate		70,242
Swing from CON to LD			1.90%
Swing from LAB to LD			6.06%
Swing from LAB to CON			4.16%
	Liberal Democrat hold

Election 2005 (New Boundaries)

View full Election 2005 (New Boundaries) results.

Party		Votes	Percentage	Change
	Liberal Democrat	15,652	42.32%	+0.09%
	Conservative	12,394	33.51%	-0.39%
	Labour	8,228	22.25%	+0.66%
	Others	714	1.93%	N/A
Majority		3,258	8.81%
Turnout		36,988	56.92%	-1.14%
Electorate		64,981
Swing from CON to LD			0.24%
Swing from LD to LAB			0.28%
Swing from CON to LAB			0.52%
	Liberal Democrat hold

Election 2005

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Party		Votes	Percentage	Change
	Liberal Democrat	17,047	42.22%	-2.38%
	Conservative	13,685	33.90%	+4.84%
	Labour	8,714	21.58%	-2.29%
	UKIP	928	2.30%	+1.48%
Majority		3,362	8.33%
Turnout		40,374	58.06%	+7.19%
Electorate		69,539
Swing from LD to CON			3.61%
Swing from LD to LAB			0.04%
Swing from LAB to CON			3.56%
	Liberal Democrat hold

Election 2001

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Party		Votes	Percentage	Change
	Liberal Democrat	17,490	44.60%	+5.10%
	Conservative	11,396	29.06%	-2.07%
	Labour	9,361	23.87%	-1.44%
	Minor	647	1.65%	N/A
	UKIP	321	0.82%	+0.55%
Majority		6,094	15.54%
Turnout		39,215	50.87%	-13.34%
Electorate		77,095
Swing from CON to LD			3.58%
Swing from LAB to LD			3.27%
Swing from CON to LAB			0.31%
	Liberal Democrat hold

Election 1997

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Party		Votes	Percentage	Change
	Liberal Democrat	20,421	39.50%	-2.54%
	Conservative	16,094	31.13%	-11.36%
	Labour	13,086	25.31%	+10.67%
	Minor	1,629	3.15%	N/A
	UKIP	141	0.27%	N/A
	Others	324	0.63%	N/A
Majority		4,327	8.37%
Turnout		51,695	64.21%	-4.89%
Electorate		80,514
Swing from CON to LD			4.41%
Swing from LD to LAB			6.60%
Swing from CON to LAB			11.01%
	Liberal Democrat gain from Conservative

Election 1992

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Party		Votes	Percentage	Change
	Conservative	22,798	42.49%	-0.80%
	Liberal Democrat	22,556	42.04%	N/A
	Labour	7,857	14.64%	+1.68%
	Green	349	0.65%	N/A
	Minor	91	0.17%	N/A
Majority		242	0.45%
Turnout		53,651	69.10%	-2.16%
Electorate		77,648
Swing from CON to LD			21.42%
Swing from CON to LAB			1.24%
Swing from LAB to LD			20.18%
	Conservative hold

Election 1987

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Party		Votes	Percentage	Change
	Conservative	23,534	43.29%	-6.72%
	SDP-Liberal Alliance	23,329	42.91%	+17.48%
	Labour	7,047	12.96%	-9.60%
	Minor	455	0.84%	N/A
Majority		205	0.38%
Turnout		54,365	71.26%	+3.92%
Electorate		76,292
Swing from CON to ALL			12.10%
Swing from LAB to CON			1.44%
Swing from LAB to ALL			13.54%
	Conservative hold

Election 1983

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Party		Votes	Percentage	Change
	Conservative	25,101	50.01%	-4.66%
	SDP-Liberal Alliance	12,766	25.43%	N/A
	Labour	11,324	22.56%	-8.62%
	Minor	554	1.10%	N/A
	Others	451	0.90%	N/A
Majority		12,335	24.57%
Turnout		50,196	67.34%	-5.54%
Electorate		74,537
Swing from CON to ALL			15.05%
Swing from LAB to CON			1.98%
Swing from LAB to ALL			17.03%
	Conservative hold

Election 1979

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Party		Votes	Percentage	Change
	Conservative	26,835	54.67%	+7.06%
	Labour	15,306	31.18%	+0.01%
	Liberal	6,487	13.22%	-6.76%
	Others	457	0.93%	N/A
Majority		11,529	23.49%
Turnout		49,085	72.88%	+3.49%
Electorate		67,346
Swing from LAB to CON			3.53%
Swing from LIB to CON			6.91%
Swing from LIB to LAB			3.38%
	Conservative hold

Election 1974 (October)

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Party		Votes	Percentage	Change
	Conservative	23,379	47.61%	-2.65%
	Labour	15,308	31.17%	+1.49%
	Liberal	9,807	19.97%	+0.66%
	Others	612	1.25%	N/A
Majority		8,071	16.44%
Turnout		49,106	69.40%	-6.47%
Electorate		70,761
Swing from CON to LAB			2.07%
Swing from CON to LIB			1.66%
Swing from LIB to LAB			0.42%
	Conservative hold

Election 1974 (February)

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Party		Votes	Percentage	Change
	Conservative	26,824	50.26%	N/A
	Labour	15,842	29.69%	N/A
	Liberal	10,307	19.31%	N/A
	Others	394	0.74%	N/A
Majority		10,982	20.58%
Turnout		53,367	75.86%	N/A
Electorate		70,345

	Conservative win

2029 General Election

Poll of Polls

Seat-By-Seat Forecast

Custom Swingometer 2029

LAB - Targets | Defence

CON - Targets | Defence

LD - Targets | Defence

REF - Targets | Defence

GRN - Targets | Defence

2024 General Election Results