The county of Somerset is currently divided into 7 parliamentary constituencies, which are all county constituencies. Three seats cross the county boundary - two are shared with Avon and one with Devon.
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 Somerset with Avon and Devon as a sub-region of the South West Region, resulting in significant change to the existing pattern of constituencies. In Somerset, only the constituency of Yeovil retained its name with relatively minor changes. The boundary changes created the cross-county boundary constituencies of Frome and East Somerset, Wells and Mendip Hills, and Tiverton and Minehead. Bridgwater was re-established as a constituency, replacing Bridgwater and West Somerset, while the new constituency of Glastonbury and Somerton largely replaced Somerton and Frome. Taunton Deane was renamed Taunton and Wellington.
The boundary commission recommended the following seats within Somerset:
Containing electoral wards from Mendip
Containing electoral wards from Sedgemoor
Containing electoral wards from Somerset West and Taunton
Containing electoral wards from South Somerset
<sup>1</sup>Also contains electoral wards in the District of Bath and North East Somerset
<sup>2</sup>Also contains electoral wards in the District of North Somerset
<sup>3</sup>Also contains electoral wards in the Devon District of Mid Devon
Primary data source: House of Commons research briefing - General election results from 1918 to 2019
The number of votes cast for each political party who fielded candidates in constituencies comprising Somerset in the 2024 general election were as follows:
Note that before 1983 Somerset was analysed under its Ceremonial definition (including the southern part of what became analysed at boundary reviews as Avon, see Avon's list of seats).
<sup>1</sup>pre-1979: Liberal Party; 1983 & 1987: SDPâÂÂLiberal Alliance
<nowiki>*</nowiki> Included in Other
<sup>1</sup>1983 & 1987 - SDPâÂÂLiberal Alliance
A cell marked â (with a different colour background to the preceding cell) indicates that the previous MP continued to sit under a new party name.
<sup>1</sup>partly in Avon <sup>2</sup>partly in Devon