# List of parliamentary constituencies in Powys

Powys is divided into two constituencies of the House of Commons of the UK Parliament (Westminster), which are also used for elections to the Senedd. The current boundaries have been effective since the 2007 National Assembly for Wales election and the 2010 UK general election.
Powys is one of the eight preserved counties of Wales, and has the name and boundaries of one of the 22 principal areas.
For Senedd elections, constituencies are grouped into additional member electoral regions, and changes to constituency boundaries mean, also, changes to regional boundaries.

## Westminster boundaries
### From 2024

* Brecon, Radnor and Cwm Tawe
* Montgomeryshire and Glyndŵr

### 2010 to 2024

| Constituency | Boundaries |
| 1. Brecon and Radnorshire CC (Westminster) | Parliamentary constituencies in Powys 2010 |
| 2. Montgomeryshire CC (Westminster) | Parliamentary constituencies in Powys 2010 |
Conservative †  Liberal Democrat ¤
| Constituency | Electorate | Majority | Member of Parliament | Member of Parliament | Nearest opposition | Nearest opposition | Map reference above |
| Brecon and Radnorshire | 55,490 | 7,131 | | Fay Jones † | | Jane Dodds ¤ | 1 |
| Montgomeryshire | 48,997 | 12,138 | | Craig Williams † | | Kishan Devani ¤ | 2 |

### 1997 to 2010

| Constituency | Boundaries |
| 1. Brecon and Radnorshire CC (Westminster) | Parliamentary constituencies in Powys pre-2010 |
| 2. Montgomeryshire CC (Westminster) | Parliamentary constituencies in Powys pre-2010 |
| 3. Clwyd South CC (Westminster) (part) | Parliamentary constituencies in Powys pre-2010 |
The Clwyd South constituency was also partly a Clwyd constituency.

## Proposed boundary changes

The Boundary Commission for Wales submitted their final proposals in respect of the Sixth Periodic Review of Westminster Constituencies (the 2018 review) in September 2018. Although the proposals were immediately laid before Parliament they were not brought forward by the Government for approval. Accordingly, they did not come into effect for the 2019 election which took place on 12 December 2019, and which was contested using the constituency boundaries in place since 2010.
Under the terms of the Parliamentary Voting System and Constituencies Act 2011, the Sixth Review was based on reducing the total number of MPs from 650 to 600 and a strict electoral parity requirement that the electorate of all constituencies should be within a range of 5% either side of the electoral quota.
On 24 March 2020, the Minister of State for the Cabinet Office, Chloe Smith, issued a written statement to Parliament setting out the Government's thinking with regard to parliamentary boundaries. They propose to bring forward primary legislation to remove the statutory obligation to implement the 2018 Boundary Review recommendations, as well as set the framework for future boundary reviews in time for the next review which is due to begin in early 2021 and report no later than October 2023. It is proposed that the number of constituencies now remains at the current level of 650, rather than being reduced to 600, while retaining the requirement that the electorate should be no more than +/- 5% from the electoral quota.

## Senedd boundaries
### From 2007

| Constituency | Senedd region | Constituency boundaries |
| 1. Brecon and Radnorshire CC (Senedd) | Mid and West Wales | Senedd constituencies in Powys 2007 |
| 2. Montgomeryshire CC (Senedd) | Mid and West Wales | Senedd constituencies in Powys 2007 |
The Mid and West Wales region also includes five Dyfed constituencies and one Gwynedd constituency.

### 1999 to 2007

| Constituency | Senedd region | Constituency boundaries |
| 1. Brecon and Radnorshire CC (Senedd) | Mid and West Wales | Assembly constituencies in Powys pre-2007 |
| 2. Montgomeryshire CC (Senedd) | Mid and West Wales | Assembly constituencies in Powys pre-2007 |
| 3. Clwyd South CC (Senedd) (part) | North Wales | Assembly constituencies in Powys pre-2007 |

## Results
### Westminster elections

| 2005 | 2010 | 2015 | 2017 | 2019 (Aug) | 2019 (Dec) |

### Assembly/Senedd elections

| 2007 | 2011 | 2016 | 2021 |

## 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.

### 1832 to 1859

Conservative  Peelite  Whig
| Constituency | 1832 | 33 | 1835 | 1837 | 40 | 1841 | 1847 | 50 | 1852 | 54 | 55 | 1857 | 58 |
| Montgomery Boroughs | Pugh | Edwards | Edwards | Edwards | Edwards | Cholmondeley | Pugh | Pugh | Pugh | Pugh | Pugh | Pugh | Pugh |
| Montgomeryshire | C. Williams-Wynn | C. Williams-Wynn | C. Williams-Wynn | C. Williams-Wynn | C. Williams-Wynn | C. Williams-Wynn | C. Williams-Wynn | H. Williams-Wynn | H. Williams-Wynn | H. Williams-Wynn | H. Williams-Wynn | H. Williams-Wynn | H. Williams-Wynn |
| Radnor Boroughs | Price | Price | Price | Price | Price | Price | T. Lewis | T. Lewis | T. Lewis | T. Lewis | G. Lewis | G. Lewis | G. Lewis |
| Radnorshire | T. Lewis | T. Lewis | Wilkins | Wilkins | J. Walsh | J. Walsh | J. Walsh | J. Walsh | J. Walsh | J. Walsh | J. Walsh | J. Walsh | J. Walsh |
| Brecon | Watkins | Watkins | C. M. Morgan | C. M. Morgan | C. M. Morgan | C. M. Morgan | Watkins | Watkins | C. R. Morgan | Watkins | Watkins | Watkins | Watkins |
| Breconshire | Wood | Wood | Wood | Wood | Wood | Wood | Bailey | Bailey | Bailey | Bailey | Bailey | Bailey | G. Morgan |

### 1859 to 1885

Conservative  Liberal
| Constituency | 1859 | 61 | 62 | 63 | 1865 | 66 | 1868 | 69 | 70 | 1874 | 75 | 77 | 1880 | 84 |
| Montgomery Boroughs | Pugh | Willes-Johnson | Willes-Johnson | C. Hanbury-Tracy | C. Hanbury-Tracy | C. Hanbury-Tracy | C. Hanbury-Tracy | C. Hanbury-Tracy | C. Hanbury-Tracy | C. Hanbury-Tracy | C. Hanbury-Tracy | F. Hanbury-Tracy | F. Hanbury-Tracy | F. Hanbury-Tracy |
| Montgomeryshire | H. Williams-Wynn | H. Williams-Wynn | C. Williams-Wynn jnr | C. Williams-Wynn jnr | C. Williams-Wynn jnr | C. Williams-Wynn jnr | C. Williams-Wynn jnr | C. Williams-Wynn jnr | C. Williams-Wynn jnr | C. Williams-Wynn jnr | C. Williams-Wynn jnr | C. Williams-Wynn jnr | Rendel | Rendel |
| Radnor Boroughs | G. Lewis | G. Lewis | G. Lewis | Green-Price | Green-Price | Green-Price | Green-Price | Cavendish | Cavendish | Cavendish | Cavendish | Cavendish | Williams | Coltman-Rogers |
| Radnorshire | J. Walsh | J. Walsh | J. Walsh | J. Walsh | J. Walsh | J. Walsh | A. Walsh | A. Walsh | A. Walsh | A. Walsh | A. Walsh | A. Walsh | Green-Price | Green-Price |
| Brecon | Watkins | Watkins | Watkins | Watkins | Watkins | Gwyn$^1$ | Gwyn$^1$ | Villiers | Gwynne-Holford | Gwynne-Holford | Gwynne-Holford | Gwynne-Holford | Flower | Flower |
| Breconshire | G. Morgan | G. Morgan | G. Morgan | G. Morgan | G. Morgan | G. Morgan | G. Morgan | G. Morgan | G. Morgan | G. Morgan | Fuller-Maitland | Fuller-Maitland | Fuller-Maitland | Fuller-Maitland |
$^1$ original victor Pratt (Liberal) declared void on petition

### 1885 to 1918

Conservative  Liberal
| Constituency | 1885 | 1886 | 1892 | 94 | 1895 | 1900 | 1906 | Jan 1910 | Dec 1910 |
| Montgomery District | P. Pryce-Jones | Hanbury-Tracy | P. Pryce-Jones | P. Pryce-Jones | E. Pryce-Jones | E. Pryce-Jones | Rees | Rees | E. Pryce-Jones |
| Montgomeryshire | Rendel | Rendel | Rendel | Humphreys-Owen | Humphreys-Owen | Humphreys-Owen | Davies | Davies | Davies |
| Radnorshire | Walsh | Walsh | Edwards | Edwards | Milbank | Edwards | Edwards | Dillwyn-Venables-Llewellyn | Edwards |
| Breconshire | Fuller-Maitland | Fuller-Maitland | Fuller-Maitland | Fuller-Maitland | Morley | Morley | Robinson | Robinson | Robinson |

### 1918 to 1950

Coalition Liberal (1918–22) / National Liberal (1922–23)  Conservative  Independent  Labour  Liberal  National Government  National Liberal (1931–68)
| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 31 | 1931 | 1935 | 39 | 42 | 1945 |
| Montgomeryshire | D. Davies | D. Davies | D. Davies | D. Davies | C. Davies | → | → | → | → | → | → |
| Brecon and Radnor | Robinson | Jenkins | → | Hall | Freeman | Freeman | Hall | Guest | Jackson | Jackson | Watkins |

### 1950 to 1997

Conservative  Labour  Liberal  Liberal Democrats
| Constituency | 1950 | 1951 | 1955 | 1959 | 62 | 1964 | 1966 | 1970 | Feb 74 | Oct 74 | 1979 | 1983 | 85 | 1987 | 88 | 1992 |
| Montgomeryshire | C. Davies | C. Davies | C. Davies | C. Davies | Hooson | Hooson | Hooson | Hooson | Hooson | Hooson | Williams | Carlile | Carlile | Carlile | → | → |
| Brecon and Radnor / B & R'shire ('83) | Watkins | Watkins | Watkins | Watkins | Watkins | Watkins | Watkins | Roderick | Roderick | Roderick | Hooson | Hooson | Livsey | Livsey | → | Evans |

### 1997 to present

Conservative  Labour  Liberal Democrats
| Constituency | 1997 | 2001 | 2005 | 2010 | 2015 | 2017 | 19 | 2019 | 2024 |
| Montgomeryshire / Montgomeryshire & Glyndwr (2024) | Öpik | Öpik | Öpik | G. Davies | G. Davies | G. Davies | G. Davies | C. Williams | Witherden |
| Brecon & Radnorshire / Brecon, Radnor & Cwm Tawe (2024) | Livsey | R. Williams | R. Williams | R. Williams | C. Davies | C. Davies | Dodds | Jones | Chadwick |