The ceremonial county of Derbyshire (which includes the unitary authority of Derby) is divided into 11 parliamentary constituencies: three borough constituencies and eight county constituencies. Constituencies 2010 boundary changes Under the Fifth Periodic Review of Westminster constituencies, the Boundary Commission for England decided to increase the number of seats which covered Derbyshire from 10 to 11, with the re-establishment of Mid Derbyshire. As a consequence of resulting boundary changes, West Derbyshire was renamed Derbyshire Dales. Proposed boundary changes 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. Final proposals will be published by 1 July 2023. The commission has proposed retaining the current number of constituencies in Derbyshire, as detailed below, with minor boundary changes to reflect changes to electoral wards within the county and to bring the electorates within the statutory range. Containing electoral wards from Amber Valley Amber Valley Derbyshire Dales (part) Mid Derbyshire (part) Containing electoral wards from Bolsover Bolsover (part) Containing electoral wards from Chesterfield Chesterfield North East Derbyshire (part) Containing electoral wards from Derby Derby North Derby South Mid Derbyshire (part) Containing electoral wards from Derbyshire Dales Derbyshire Dales (part) Containing electoral wards from Erewash Erewash Mid Derbyshire (part) Containing electoral wards from High Peak High Peak Containing electoral wards from North East Derbyshire Bolsover (part) North East Derbyshire (part) Containing electoral wards from South Derbyshire Derbyshire Dales (part) South Derbyshire 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 Derbyshire in the 2019 general election were as follows: Percentage votes 11974 &1979 - Liberal Party; 1983 & 1987 - SDP-Liberal Alliance * Included in Other Seats 11974 &1979 - Liberal Party; 1983 & 1987 - SDP-Liberal Alliance Maps 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. 1885 to 1918 1918 to 1950 1950 to 1983 1983 to present See also List of parliamentary constituencies in the East Midlands (region)