The ceremonial county of Wiltshire, England, which includes the Borough of Swindon, is divided into eight Parliamentary constituencies. They are all county constituencies.^{[nb 1]}

  † Conservative   ‡ Labour   ¤ Liberal Democrat

Constituency	Electorate[1]	Majority[2]	Member of Parliament[2]		Nearest opposition[2]		Map
Chippenham CC	72,492	8,138		Sarah Gibson¤		Nic Puntis†
East Wiltshire CC	72,409	4,716		Danny Kruger†		Rob Newman‡
Melksham and Devizes CC	71,999	2,401		Brian Mathew¤		Michelle Donelan†
Salisbury CC	70,281	3,807		John Glen†		Matt Aldridge‡
South Cotswolds CC (part)	71,490	4,973		Roz Savage¤		James Gray†
South West Wiltshire CC	71,574	3,243		Andrew Murrison†		Evelyn Akoto†
Swindon North CC	73,238	4,103		Will Stone‡		Justin Tomlinson†
Swindon South CC	72,596	9,606		Heidi Alexander‡		Robert Buckland†

See 2023 Periodic Review of Westminster constituencies for further details.

Former name	Boundaries 2010–2024	Current name	Boundaries 2024–present
Chippenham CC Devizes CC North Swindon CC North Wiltshire CC Salisbury CC South Swindon CC South West Wiltshire CC		Chippenham CC East Wiltshire CC Melksham and Devizes CC Salisbury CC South Cotswolds CC South West Wiltshire CC Swindon North CC Swindon South CC

For the 2023 Periodic Review of Westminster constituencies, which redrew the constituency map ahead of the 2024 general election, the Boundary Commission for England opted to combine Wiltshire with Gloucestershire as a sub-region of the South West Region, with the creation of the cross-county boundary constituency of South Cotswolds, resulting in a major reconfiguration of Chippenham. Devizes and North Wiltshire were abolished and new constituencies named East Wiltshire, and Melksham and Devizes, created.^[3][4] These changes came into effect for the 2024 general election.

The following seats resulted from the review:

Containing electoral wards in the Borough of Swindon

• East Wiltshire (part)
• Swindon North
• Swindon South

Containing electoral wards in the Wiltshire unitary authority district

• Chippenham
• East Wiltshire (part)
• Melksham and Devizes
• Salisbury
• South Cotswolds (parts also in the Districts of Cotswold and Stroud in Gloucestershire)
• South West Wiltshire

Under the Fifth Periodic Review of Westminster constituencies, the Boundary Commission for England decided to increase the number of seats in Wiltshire from 6 to 7, with the re-establishment of Chippenham, which affected neighbouring constituencies. An adjusted Westbury constituency was renamed South West Wiltshire.

Former name	Boundaries 1997–2010	Current name	Boundaries 2010–2024
Devizes CC North Swindon CC North Wiltshire CC Salisbury CC South Swindon CC Westbury CC		Chippenham CC Devizes CC North Swindon CC North Wiltshire CC Salisbury CC South Swindon CC South West Wiltshire CC

Primary data source: House of Commons research briefing – General election results from 1918 to 2019^[5]

The number of votes cast for each political party who fielded candidates in constituencies comprising Wiltshire in the 2024 general election were as follows:^{[nb 2][2]}

Party	Votes	%	Change from 2019	Seats	Change from 2019
Conservative	125,505	32.6%	25.2%	3	4
Liberal Democrats	96,677	25.1%	6.5%	3	3
Labour	89,880	23.3%	3.2%	2	2
Reform	52,755	13.7%	New	0	New
Greens	16,864	4.4%	1.1%	0	0
Others	3,849	1.0%	0.4%	0	0
Total	385,530	100.0		8

The number of votes cast for each political party who fielded candidates in constituencies comprising Wiltshire in the 2019 general election were as follows:

Party	Votes	%	Change from 2017	Seats	Change from 2017
Conservative	217,955	57.8%	1.0%	7	0
Labour	77,343	20.1%	6.9%	0	0
Liberal Democrats	69,876	18.6%	6.7%	0	0
Greens	11,378	3.3%	1.2%	0	0
Others	745	0.6%	2.0%	0	0
Total	377,297	100.0		7

Election year	1918	1922	1923	1924	1929	1931	1935	1945	1950	1951	1955	1959	1964	1966	1970	1974 (Feb)	1974 (Oct)	1979	1983	1987	1992	1997	2001	2005	2010	2015	2017	2019	2024
Conservative	52.8	50.0	45.7	53.9	43.2	60.7	56.2	41.6	41.0	50.1	49.6	49.3	43.2	43.8	51.0	41.9	40.3	47.4	50.3	51.9	50.9	40.2	42.1	44.3	47.7	52.4	56.8	57.8	32.6
Liberal Democrat1	30.1	34.6	42.9	30.4	34.8	19.1	19.8	18.4	19.6	3.7	8.7	10.7	18.9	15.2	11.7	29.8	30.2	27.5	34.2	31.2	28.7	26.2	25.0	26.9	30.4	11.8	11.8	18.5	25.1
Labour	17.1	15.4	11.4	15.7	21.9	20.2	24.0	39.9	39.2	46.2	41.7	38.7	37.5	40.6	37.2	28.1	29.3	22.8	14.9	16.7	18.3	28.0	29.0	24.3	15.3	17.3	27.4	20.5	23.3
Reform	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	13.7
Green Party	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	*	*	*	*	*	1.0	4.7	1.8	3.0	4.4
UKIP	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	*	*	*	4.0	13.5	1.8	*	–
Other	–	–	–	–	–	–	–	–	0.1	–	–	1.3	0.4	0.4	0.2	0.3	0.2	2.2	0.7	0.1	2.2	5.6	3.9	4.5	1.6	0.4	0.4	0.2	1.0

¹pre-1979 – Liberal Party; 1983 & 1987 – SDP-Liberal Alliance

* Included in Other

Election year	1950	1951	1955	1959	1964	1966	1970	1974 (Feb)	1974 (Oct)	1979	1983	1987	1992	1997	2001	2005	2010	2015	2017	2019	2024
Conservative	4	4	4	4	4	4	4	4	4	4	5	5	5	4	4	4	6	7	7	7	3
Liberal Democrat1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0	3
Labour	1	1	1	1	1	1	1	1	1	1	0	0	0	2	2	2	0	0	0	0	2
Total	5	5	5	5	5	5	5	5	5	5	5	5	5	6	6	6	7	7	7	7	8

¹1974 & 1979 – Liberal Party; 1983 & 1987 – SDP-Liberal Alliance

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  1885
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  1886
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  1892
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  1895
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  1900
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  1906
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  1918
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  1922
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  1923
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  1924
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  1929
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  1931
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  1935
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  1945

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  1959
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  2010
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  2024

A cell marked → (with a different colour background to the preceding cell) indicates that the previous MP continued to sit under a new party name.

  Conservative   Liberal   Liberal Unionist

Constituency	1885	1886	1892	1895	97	98	00	1900	05	1906	Jan 1910	Dec 1910	11	18
Cricklade	Maskelyne	→	Husband	Hopkinson		FitzMaurice				Massie	Calley	Lambert
Chippenham	Fletcher	Bruce	Dickson-Poynder						→		Terrell
Devizes	Long		Hobhouse	Goulding						Rogers	Peto
Salisbury	Grenfell	Hulse			Allhusen			Palmer		Tennant	Locker-Lampson
Westbury	Fuller			Chaloner				Fuller					Howard
Wilton	Grove	→	Pleydell-Bouverie				J. Morrison			Morse	Bathurst			H. Morrison

  Conservative   Labour   Liberal

Constituency	1918	1922	1923	1924	27	1929	31	1931	34	1935	42	43	1945	1950	1951	1955	1959	62	64	1964	65	1966	69	1970
Chippenham	Terrell	Bonwick		Cazalet								Eccles						Awdry
Westbury	Palmer	Darbishire		Shaw	Long			Grimston												Walters
Devizes	Bell		Macfadyen	Hurd									Hollis			Pott			C. Morrison
Salisbury	H. Morrison		Moulton	H. Morrison			Despencer-Robertson				J. Morrison										Hamilton
Swindon	Young	Banks				Addison		Banks	Addison	Wakefield			Reid			Noel-Baker							Ward	Stoddart

  Conservative   Labour   Liberal Democrats

Constituency	Feb 1974	Oct 1974	1979	1983	1987	1992	1997	2001	2005
Chippenham / N Wiltshire (1983)	Awdry		Needham				Gray
Devizes	Morrison					Ancram
Salisbury	Hamilton			Key
Westbury	Walters					Faber		Murrison
Swindon / South Swindon (1997)	Stoddart			Coombs			Drown		Snelgrove
North Swindon							Wills

  Conservative   Labour   Liberal Democrats

Constituency	2010	2015	2017	2019	2024
Chippenham	Hames	Donelan			Gibson
Devizes / East Wiltshire (2024)	Perry			Kruger
North Wiltshire / Melksham and Devizes (2024)	Gray				Mathew
Salisbury	Glen
South West Wiltshire	Murrison
Swindon North	Tomlinson				Stone
Swindon South	Buckland				Alexander

From 2024, part of northern Wiltshire was included in the South Cotswolds constituency, slightly more than half of which lies in Gloucestershire. Its representation is covered at List of parliamentary constituencies in Gloucestershire.

• Parliamentary constituencies in South West England

• Election 2019 – BBC News