List of parliamentary constituencies in Lancashire

The ceremonial county of Lancashire, which includes the unitary authorities of Blackburn with Darwen and Blackpool, is divided into sixteen parliamentary constituencies - eight borough constituencies and eight county constituencies.

2010 boundary changes
Under the Fifth Periodic Review of Westminster constituencies, the Boundary Commission for England decided to increase Lancashire's representation from 15 to 16 constituencies, with the creation of Wyre and Preston North CC. Lancaster and Wyre was reconfigured and became Lancaster and Fleetwood, and Blackpool North and Fleetwood became Blackpool North and Cleveleys. Other changes were made to realign constituency boundaries with the boundaries of current local government wards, and to reduce the electoral disparity between constituencies.

From 2024
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. 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 proposed that Lancashire be combined with Cumbria as a sub-region of the North West Region, with the existing seat of Morecambe and Lunesdale extending into southern Cumbria to create a cross-county boundary constituency. Wyre and Preston North would be abolished, with its contents being distributed to five neighbouring constituencies. As a consequence, Lancaster and Fleetwood, and Blackpool North and Cleveleys would revert back to the previous names of Lancaster and Wyre, and Blackpool North and Fleetwood respectively. Other proposed changes include the expansion of Pendle to become Pendle and Clitheroe. Four wards in the borough of West Lancashire would be included in the Merseyside constituency of Southport.

The following constituencies are proposed:

Containing electoral wards from Blackburn with Darwen Containing electoral wards from Blackpool Containing electoral wards from Burnley Containing electoral wards from Chorley Containing electoral wards from Fylde
 * Blackburn
 * Rossendale and Darwen (part)
 * Blackpool North and Fleetwood (part)
 * Blackpool South
 * Burnley (part)
 * Chorley
 * South Ribble (part)


 * Fylde (part)

Containing electoral wards from Hyndburn Containing electoral wards from Lancaster Containing electoral wards from Pendle
 * Hyndburn (part)
 * Lancaster and Wyre (part)
 * Morecambe and Lunsdale (part also in District of South Lakeland in Cumbria)


 * Burnley (part)

Containing electoral wards from Preston Containing electoral wards from Ribble Valley
 * Pendle and Clitheroe (part)
 * Preston
 * Ribble Valley (part)


 * Pendle and Clitheroe (part)


 * Ribble Valley (part)

Containing electoral wards from Rossendale


 * Hyndburn (part)
 * Rossendale and Darwen (part)

Containing electoral wards from South Ribble Containing electoral wards from West Lancashire
 * Ribble Valley (part)
 * South Ribble (part)

Containing electoral wards from Wyre
 * Southport (part also in the Merseyside borough of Sefton)
 * West Lancashire


 * Blackpool North and Fleetwood (part)
 * Fylde (part)
 * Lancaster and Wyre (part)

Results history
Primary data source: House of Commons research briefing - General election results from 1918 to 2019

2019
The number of votes cast for each political party who fielded candidates in constituencies comprising Lancashire in the 2019 general election were as follows: 1Includes The Speaker, Lyndsay Hoyle, standing in Chorley

Percentage votes
11983 & 1987 - SDP-Liberal Alliance

2Standing in Chorley, unopposed by the 3 main parties.

* Included in Other

Seats
11983 & 1987 - SDP-Liberal Alliance

2Lindsay Hoyle

Historical representation by party
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.