The county of Suffolk is divided into 8 parliamentary constituencies: 1 borough constituency and 7 county constituencies. Seven constituencies lie wholly within Suffolk while Waveney Valley straddles the county border between Suffolk and Norfolk.
For the 2023 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 Suffolk with Norfolk as a sub-region of the East of England region, with the creation of the cross-county boundary constituency of Waveney Valley. The seat of Waveney reverted to its former name of Lowestoft, and Bury St Edmunds was renamed Bury St Edmunds and Stowmarket.
In the Fifth Review the Boundary Commission for England recommended that Suffolk retained its current constituencies, with changes only to reflect revisions to local authority ward boundaries and to reduce the electoral disparity between constituencies. The largest of these changes resulted in the effective transfer of one Borough of Ipswich ward from Central Suffolk and North Ipswich to the constituency of Ipswich.
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 Suffolk in the 2024 general election were as follows:
The number of votes cast for each political party who fielded candidates in constituencies comprising Suffolk in the 2019 general election were as follows:
<sup>1</sup>Includes National Liberal Party from 1931 - 1966
<sup>2</sup>As the Brexit Party in 2019
<sup>3</sup>1918-1979 - Liberal; 1983 & 1987 - SDPâÂÂLiberal Alliance
<nowiki>*</nowiki> Included in Other
<sup>1</sup>Includes National Liberal Party up to 1966
<sup>2</sup>1950-1979 - Liberal; 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>parts also in Norfolk