The county of Northamptonshire is divided into 7 parliamentary constituencies - 2 borough constituencies and 5 county constituencies.

  Conservative †   Labour ‡

More information Constituency, Electorate ...

Constituency[nb 1]	Electorate[1]	Majority[2][nb 2]	Member of Parliament[2]		Nearest opposition[2]		Map
Corby CC	86,153	10,268		Tom Pursglove †		Beth Miller ‡
Daventry CC	77,423	26,080		Chris Heaton-Harris †		Paul Joyce ‡
Kettering CC	73,164	16,765		Philip Hollobone †		Clare Pavitt ‡
Northampton North BC	58,768	5,507		Michael Ellis †		Sally Keeble ‡
Northampton South BC	62,163	4,697		Andrew Lewer †		Gareth Eales ‡
South Northamptonshire CC	90,842	27,761		Andrea Leadsom †		Gen Kitchen ‡
Wellingborough CC	80,765	6,436 (2024)		Gen Kitchen ‡		Helen Harrison †

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Under the Fifth Periodic Review of Westminster constituencies, the Boundary Commission for England decided to increase the number of seats which covered Northamptonshire from 6 to 7, with the creation of South Northamptonshire, resulting in major changes to Daventry and Northampton South.

See 2023 Periodic Review of Westminster constituencies for further details.

Following the abandonment of the Sixth Periodic Review (the 2018 review), the Boundary Commission for England formally launched the 2023 Review on 5 January 2021.^[3] Initial proposals were published on 8 June 2021 and, following two periods of public consultation, revised proposals were published on 8 November 2022. The final proposals were published on 28 June 2023.

The commission has proposed retaining the current number of constituencies in Northamptonshire, as detailed below, with boundary changes to reflect changes to ward boundaries following the reorganisation of local government authorities within the county and to bring the electorates within the statutory range. It is proposed that Corby is renamed Corby and East Northamptonshire, and Wellingborough renamed Wellingborough and Rushden.^[4][5]

Containing electoral wards from North Northamptonshire

• Corby and East Northamptonshire
• Daventry (part)
• Kettering
• South Northamptonshire (part)
• Wellingborough and Rushden

Containing electoral wards from West Northamptonshire

• Daventry (part)
• Northampton North
• Northampton South
• South Northamptonshire (part)

Primary data source: House of Commons research briefing - General election results from 1918 to 2019^[6]

2019

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

More information Party, Votes ...

Party	Votes	%	Change from 2017	Seats	Change from 2017
Conservative	216,229	59.0%	3.3%	7	0
Labour	106,611	29.1%	6.8%	0	0
Liberal Democrats	30,813	8.4%	4.3%	0	0
Greens	10,514	2.9%	1.2%	0	0
Others	2,276	0.6%	2.0%	0	0
Total	366,443	100.0		7

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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.

• List of parliamentary constituencies in the East Midlands (region)