The non-metropolitan county of Lincolnshire is divided into 7 parliamentary constituencies – 1 borough constituency and 6 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
Boston and Skegness CC	69,381	25,621		Matt Warman†		Ben Cook‡
Gainsborough CC	76,343	22,967		Sir Edward Leigh†		Perry Smith‡
Grantham and Stamford CC	81,502	26,003		Gareth Davies†		Kathryn Salt‡
Lincoln BC	74,942	3,514		Karl McCartney†		Karen Lee‡
Louth and Horncastle CC	79,634	28,868		Victoria Atkins†		Ellie Green‡
Sleaford and North Hykeham CC	94,761	32,564		Dr Caroline Johnson†		Linda Edwards-Shea‡
South Holland and The Deepings CC	75,975	30,838		John Hayes†		Mark Popple‡

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In the Fifth Review the Boundary Commission for England recommended that Lincolnshire retained its current constituencies, with minor changes only to reflect revisions to local authority ward boundaries and to reduce the electoral disparity between constituencies.

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 recommendations were published on 28 June 2023.

The commission has proposed including Lincolnshire with Leicestershire and Rutland in a sub-region of the East Midlands region, creating one additional seat by re-establishing the constituency of Rutland and Stamford, which spans all three counties. Consequently, that town is removed from the constituency of Grantham and Stamford, which is to be renamed Grantham and Bourne. ^[4]

The following seats are proposed:

Containing electoral wards from Boston

• Boston and Skegness (part)

Containing electoral wards from East Lyndsey

• Boston and Skegness (part)
• Louth and Horncastle

Containing electoral wards from Lincoln

• Lincoln (part)

Containing electoral wards from North Kesteven

• Grantham and Bourne (part)
• Lincoln (part)
• Sleaford and North Hykeham

Containing electoral wards from South Holland

• South Holland and The Deepings (part)

Containing electoral wards from South Kesteven

• Grantham and Bourne (part)
• Rutland and Stamford (also comprises the county of Rutland and parts of Harborough in Leicestershire)
• South Holland and The Deepings (part)

Containing electoral wards from West Lyndsey

• Gainsborough

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

2019

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

More information Party, Votes ...

Party	Votes	%	Change from 2017	Seats	Change from 2017
Conservative	246,959	67.2%	5.6%	7	1
Labour	76,583	20.8%	7.7%	0	1
Liberal Democrats	28,389	7.7%	3.6%	0	0
Greens	6,815	1.9%	0.5%	0	0
Brexit	1,079	0.3%	new	0	0
Others	7,614	2.1%	2.3%	0	0
Total	367,439	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)
• List of parliamentary constituencies in Humberside for those covering North Lincolnshire and North East Lincolnshire unitary authorities.