The ceremonial county of Berkshire (which is entirely made up of unitary authorities â Bracknell Forest, Reading, Slough, West Berkshire, Windsor and Maidenhead and Wokingham) is divided into nine parliamentary constituencies: three borough constituencies and six county constituencies.
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 Berkshire with Hampshire and Surrey as a sub-region of the South East Region. As a result, Windsor now includes Englefield Green and Virginia Water in the Surrey borough of Runnymede. The two Reading constituencies (East and West) would be abolished and revert to a single constituency (Reading Central), with two new constituencies created, named Earley and Woodley, and Reading West and Mid Berkshire.
The following constituencies were proposed:
Containing electoral wards from Bracknell Forest
Containing electoral wards from Reading
Containing electoral wards from Slough
Containing electoral wards from West Berkshire
Containing electoral wards from Windsor and Maidenhead
Containing electoral wards from Wokingham
<sup>1</sup>also includes part of the Surrey borough of Runnymede
Primary data source: House of Commons research briefing â General election results from 1918 to 2019
The number of votes cast for each political party who fielded candidates in constituencies comprising Berkshire in the 2024 general election were as follows:
The number of votes cast for each political party who fielded candidates in constituencies comprising Berkshire in the 2019 general election were as follows:
Note that before 1983 Berkshire additionally covered the southern part of what is now Oxfordshire, and the Eton and Slough areas which now form part of Berkshire were part of Buckinghamshire.
<sup>1</sup>pre-1979: Liberal Party; 1983 & 1987 â SDP-Liberal Alliance
<sup>1</sup>As the Brexit Party in 2019
<nowiki>*</nowiki> Included in Other
Accurate vote percentages for the 1918, 1931 and 1935 elections are unavailable because some candidates were elected unopposed.
<sup>1</sup>1983 & 1987 â SDP-Liberal Alliance
<sup>1</sup>from 2024 this includes areas of Surrey