The unitary authorities of Durham and Borough of Darlington are divided into 8 parliamentary constituencies, including 2 cross-county constituencies, all of which are county constituencies.

Constituencies

Boundary changes

2024

See 2023 Periodic Review of Westminster constituencies for further details. For the 2023 Periodic Review of Westminster constituencies, which redrew the constituency map ahead of the 2024 United Kingdom general election, the Boundary Commission for England opted to combine the unitary authority of County Durham with the Tyne and Wear boroughs of Gateshead, South Tyneside and Sunderland as a sub-region of the North East Region, with the creation of a cross-county boundary constituency named Blaydon and Consett, resulting in the abolition of North West Durham. The reconfigured Sedgefield constituency was renamed Newton Aycliffe and Spennymoor. The Borough of Darlington was included in a Tees Valley sub-division. The following seats resulted from the boundary review: Containing electoral wards in Darlington Containing electoral wards in County Durham

2010

Under the Fifth Periodic Review of Westminster constituencies, the Boundary Commission for England decided to retain Durham's constituencies for the 2010 election, making minor changes to realign constituency boundaries with the boundaries of current local government wards.

Results history

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

2024

The number of votes cast for each political party who fielded candidates in constituencies comprising Durham in the 2024 general election were as follows:

2019

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

Percentage votes

1As the Brexit Party in 2019 21983 & 1987 - SDP-Liberal Alliance

• Included in Other

Seats

Maps

1885-1910

1918-1945

1950-1979

1983-2024

2024-present (including constituencies partly in Cleveland and Tyne and Wear)

Historical results 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.

1885 to 1906

1906 to 1918

1victor in January 1910, Christopher Furness, declared void. Fresh by-election held June 1910, won by Stephen Furness.

1918 to 1931

1931 to 1950

1950 to 1983

1983 to 2024

1abolished in 2024, with some areas going to the Blaydon and Consett seat which is mostly in Tyne and Wear

2024 to present