# List of parliamentary constituencies in West Glamorgan

The preserved county of West Glamorgan is divided into five parliamentary constituencies – two borough constituencies and three county constituencies.

## Constituencies

| Name | Current boundaries |
| Aberavon CC Gower CC Neath CC Swansea East BC Swansea West BC | Parliamentary constituencies in West Glamorgan |
The current boundaries have been effective since the 2007 National Assembly for Wales election and the 2010 United Kingdom general election. The only change from the previous scheme was a minute realignment of the boundary between Gower and Neath far too small to show on the map.
| Constituency | Electorate | Majority | Member of Parliament | Nearest opposition | Map reference above |
| Aberavon | 50,747 | 10,490 | Stephen Kinnock ‡ | Charlotte Lang † | 1 |
| Gower | 61,762 | 1,837 | Tonia Antoniazzi ‡ | Francesca O'Brien † | 2 |
| Neath | 56,416 | 5,637 | Christina Rees ‡ | Jon Burns † | 3 |
| Swansea East | 58,450 | 7,970 | Carolyn Harris ‡ | Denise Howard † | 4 |
| Swansea West | 57,078 | 8,116 | Geraint Davies ‡ | James Price † | 5 |

## 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.

## Historical representation by party (whole of Glamorgan)

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 1885

Conservative  Liberal  Peelite  Radical  Whig
| Constituency | 1832 | 1835 | 1837 | 1841 | 1847 | 51 | 1852 | 52 | 55 | 1857 | 1859 | 1865 | 1868 | 1874 | 1880 |
| Cardiff Boroughs | Nicholl | Nicholl | Nicholl | Nicholl | Nicholl | Nicholl | Coffin | Coffin | Coffin | Crichton-Stuart | → | → | → | → | Reed |
| Glamorganshire | L. W. Dillwyn | Wyndham-Quin | Wyndham-Quin | Wyndham-Quin | Tyler | Tyler | Tyler | Tyler | Tyler | H. Vivian | → | → | → | → | → |
| Glamorganshire | Talbot | Talbot | Talbot | Talbot | Talbot | Talbot | Talbot | Talbot | Talbot | Talbot | → | → | → | → | → |
| Merthyr Tydvil | Guest | Guest | Guest | Guest | Guest | Guest | Guest | Bruce | Bruce | Bruce | → | → | Richard | Richard | Richard |
| Merthyr Tydvil | | | | | | | | | | | | | Fothergill | Fothergill | James |
| Swansea Boroughs | J. Vivian | J. Vivian | J. Vivian | J. Vivian | J. Vivian | J. Vivian | J. Vivian | J. Vivian | L. L. Dillwyn | L. L. Dillwyn | → | → | → | → | → |

### 1885 to 1918

Conservative  Independent Labour  Labour  Liberal  Liberal-Labour  Liberal Unionist
| Constituency | 1885 | 1886 | 87 | 88 | 90 | 1892 | 93 | 1895 | 1900 | 04 | 1906 | 09 | Jan 1910 | 10 | Dec 1910 | 15 |
| Cardiff District of Boroughs | Reed | Reed | Reed | Reed | Reed | Reed | Reed | Maclean | Reed | → | Guest | Guest | D. Thomas | D. Thomas | Crichton-Stuart | Cory |
| Glamorganshire, East | A. Thomas | A. Thomas | A. Thomas | A. Thomas | A. Thomas | A. Thomas | A. Thomas | A. Thomas | A. Thomas | A. Thomas | A. Thomas | A. Thomas | A. Thomas | A. Thomas | C. Edwards | C. Edwards |
| Glamorganshire, Mid | Talbot | Talbot | Talbot | Talbot | Evans | Evans | Evans | Evans | Evans | Evans | Evans | Evans | Evans | Gibbins | J. H. Edwards | J. H. Edwards |
| Glamorganshire, South | A. Williams | A. Williams | A. Williams | A. Williams | A. Williams | A. Williams | A. Williams | Wyndham-Quin | Wyndham-Quin | Wyndham-Quin | Brace | → | → | → | → | → |
| Gower | Yeo | Yeo | Yeo | Randell | Randell | Randell | Randell | Randell | J. Thomas | J. Thomas | J. Williams | J. Williams | → | → | → | → |
| Merthyr Tydfil (two MPs) | Richard | Richard | Richard | D. A. Thomas | D. A. Thomas | D. A. Thomas | D. A. Thomas | D. A. Thomas | D. A. Thomas | D. A. Thomas | D. A. Thomas | D. A. Thomas | Rees Jones | Rees Jones | Rees Jones | Rees Jones |
| Merthyr Tydfil (two MPs) | James | James | James | Morgan | Morgan | Morgan | Morgan | Morgan | Hardie | Hardie | Hardie | Hardie | Hardie | Hardie | Hardie | Stanton |
| Rhondda | Abraham | Abraham | Abraham | Abraham | Abraham | Abraham | Abraham | Abraham | Abraham | Abraham | Abraham | Abraham | → | → | → | → |
| Swansea District | Vivian | → | → | → | → | → | W. Williams | Jones | Jones | Jones | Jones | Jones | Jones | Jones | Jones | T. Williams |
| Swansea Town | Dillwyn | Dillwyn | Dillwyn | Dillwyn | Dillwyn | Burnie | Burnie | Llewellyn | Newnes | Newnes | Newnes | Newnes | Mond | Mond | Mond | Mond |

### 1918 to 1950

Coalition Liberal (1918-22) / National Liberal (1922-23)  Coalition National Democratic & Labour  Conservative  Independent Labour Party  Labour  Liberal  National Government  National Labour  National Liberal (1931-68)
| Constituency | 1918 | 19 | 20 | 21 | 22 | 1922 | 1923 | 1924 | 1929 | 31 | 1931 | 32 | 33 | 34 | 1935 | 38 | 39 | 40 | 42 | 45 | 1945 | 46 |
| Aberavon | J. Edwards | J. Edwards | J. Edwards | J. Edwards | J. Edwards | MacDonald | MacDonald | MacDonald | Cove | Cove | Cove | Cove | Cove | Cove | Cove | Cove | Cove | Cove | Cove | Cove | Cove | Cove |
| Aberdare | Stanton | Stanton | Stanton | Stanton | Stanton | Hall | Hall | Hall | Hall | Hall | Hall | Hall | Hall | Hall | Hall | Hall | Hall | Hall | Hall | Hall | Hall | D. Thomas |
| Llandaff & Barry | Cope | Cope | Cope | Cope | Cope | Cope | Cope | Cope | Lloyd | Lloyd | Munro | Munro | Munro | Munro | Munro | Munro | Munro | Munro | Lakin | Lakin | Ungoed-Thomas | Ungoed-Thomas |
| Caerphilly | Onions | Onions | Onions | M. Jones | M. Jones | M. Jones | M. Jones | M. Jones | M. Jones | M. Jones | M. Jones | M. Jones | M. Jones | M. Jones | M. Jones | M. Jones | N. Edwards | N. Edwards | N. Edwards | N. Edwards | N. Edwards | N. Edwards |
| Cardiff Central | Gould | Gould | Gould | Gould | Gould | Gould | Gould | Lougher | Bennett | → | → | → | → | → | → | → | → | → | → | → | G. Thomas | G. Thomas |
| Cardiff East | Seager | Seager | Seager | Seager | Seager | Lougher | Webb | Kinloch-Cooke | Edmunds | Edmunds | Temple-Morris | Temple-Morris | Temple-Morris | Temple-Morris | Temple-Morris | Temple-Morris | Temple-Morris | Temple-Morris | Grigg | Grigg | Marquand | Marquand |
| Cardiff South | Cory | Cory | Cory | Cory | Cory | Cory | Henderson | H. Evans | Henderson | Henderson | H. Evans | H. Evans | H. Evans | H. Evans | H. Evans | H. Evans | H. Evans | H. Evans | H. Evans | H. Evans | Callaghan | Callaghan |
| Gower | J. Williams | J. Williams | J. Williams | J. Williams | Grenfell | Grenfell | Grenfell | Grenfell | Grenfell | Grenfell | Grenfell | Grenfell | Grenfell | Grenfell | Grenfell | Grenfell | Grenfell | Grenfell | Grenfell | Grenfell | Grenfell | Grenfell |
| Merthyr | Rees Jones | Rees Jones | Rees Jones | Rees Jones | Rees Jones | Wallhead | Wallhead | Wallhead | Wallhead | Wallhead | → | → | → | S. Davies | S. Davies | S. Davies | S. Davies | S. Davies | S. Davies | S. Davies | S. Davies | S. Davies |
| Neath | J. H. Edwards | J. H. Edwards | J. H. Edwards | J. H. Edwards | J. H. Edwards | Jenkins | Jenkins | Jenkins | Jenkins | Jenkins | Jenkins | Jenkins | Jenkins | Jenkins | Jenkins | Jenkins | Jenkins | Jenkins | Jenkins | D. J. Williams | D. J. Williams | D. J. Williams |
| Ogmore | Hartshorn | Hartshorn | Hartshorn | Hartshorn | Hartshorn | Hartshorn | Hartshorn | Hartshorn | Hartshorn | E. Williams | E. Williams | E. Williams | E. Williams | E. Williams | E. Williams | E. Williams | E. Williams | E. Williams | E. Williams | E. Williams | E. Williams | J. Evans |
| Pontypridd | Lewis | Lewis | Lewis | Lewis | T. Jones | T. Jones | T. Jones | T. Jones | T. Jones | D. Davies | D. Davies | D. Davies | D. Davies | D. Davies | D. Davies | Pearson | Pearson | Pearson | Pearson | Pearson | Pearson | Pearson |
| Rhondda East | Watts-Morgan | Watts-Morgan | Watts-Morgan | Watts-Morgan | Watts-Morgan | Watts-Morgan | Watts-Morgan | Watts-Morgan | Watts-Morgan | Watts-Morgan | Watts-Morgan | Watts-Morgan | Mainwaring | Mainwaring | Mainwaring | Mainwaring | Mainwaring | Mainwaring | Mainwaring | Mainwaring | Mainwaring | Mainwaring |
| Rhondda West | Abraham | Abraham | John | John | John | John | John | John | John | John | John | John | John | John | John | John | John | John | John | John | John | John |
| Swansea East | T. Williams | Matthews | Matthews | Matthews | Matthews | D. Williams | D. Williams | D. Williams | D. Williams | D. Williams | D. Williams | D. Williams | D. Williams | D. Williams | D. Williams | D. Williams | D. Williams | Mort | Mort | Mort | Mort | Mort |
| Swansea West | Mond | Mond | Mond | Mond | Mond | Mond | Samuel | Runciman | Samuel | Samuel | L. Jones | L. Jones | L. Jones | L. Jones | L. Jones | L. Jones | L. Jones | L. Jones | L. Jones | L. Jones | P. Morris | P. Morris |

### 1950 to 1983

Conservative  Independent Labour  Labour  Social Democratic  Speaker
| Constituency | 1950 | 1951 | 54 | 1955 | 1959 | 63 | 1964 | 1966 | 67 | 68 | 1970 | 72 | Feb 74 | Oct 74 | 76 | 1979 | 81 | 82 |
| Aberavon | Cove | Cove | Cove | Cove | J. Morris | J. Morris | J. Morris | J. Morris | J. Morris | J. Morris | J. Morris | J. Morris | J. Morris | J. Morris | J. Morris | J. Morris | J. Morris | J. Morris |
| Aberdare | D. Thomas | D. Thomas | Probert | Probert | Probert | Probert | Probert | Probert | Probert | Probert | Probert | Probert | I. Evans | I. Evans | I. Evans | I. Evans | I. Evans | I. Evans |
| Barry | D. Rees | Gower | Gower | Gower | Gower | Gower | Gower | Gower | Gower | Gower | Gower | Gower | Gower | Gower | Gower | Gower | Gower | Gower |
| Caerphilly | N. Edwards | N. Edwards | N. Edwards | N. Edwards | N. Edwards | N. Edwards | N. Edwards | N. Edwards | N. Edwards | A. Evans | A. Evans | A. Evans | A. Evans | A. Evans | A. Evans | E. Davies | → | → |
| Cardiff West | G. Thomas | G. Thomas | G. Thomas | G. Thomas | G. Thomas | G. Thomas | G. Thomas | G. Thomas | G. Thomas | G. Thomas | G. Thomas | G. Thomas | G. Thomas | G. Thomas | → | → | → | → |
| Cardiff N / Cardiff NW ('74) | Llewellyn | Llewellyn | Llewellyn | Llewellyn | Box | Box | Box | Rowlands | Rowlands | Rowlands | Roberts | Roberts | Roberts | Roberts | Roberts | Roberts | Roberts | Roberts |
| Cardiff SE | Callaghan | Callaghan | Callaghan | Callaghan | Callaghan | Callaghan | Callaghan | Callaghan | Callaghan | Callaghan | Callaghan | Callaghan | Callaghan | Callaghan | Callaghan | Callaghan | Callaghan | Callaghan |
| Gower | Grenfell | Grenfell | Grenfell | Grenfell | I. Davies | I. Davies | I. Davies | I. Davies | I. Davies | I. Davies | I. Davies | I. Davies | I. Davies | I. Davies | I. Davies | I. Davies | I. Davies | Wardell |
| Merthyr Tydfil | S. Davies | S. Davies | S. Davies | S. Davies | S. Davies | S. Davies | S. Davies | S. Davies | S. Davies | S. Davies | → | Rowlands | Rowlands | Rowlands | Rowlands | Rowlands | Rowlands | Rowlands |
| Neath | D. J. Williams | D. J. Williams | D. J. Williams | D. J. Williams | D. J. Williams | D. J. Williams | Coleman | Coleman | Coleman | Coleman | Coleman | Coleman | Coleman | Coleman | Coleman | Coleman | Coleman | Coleman |
| Ogmore | Padley | Padley | Padley | Padley | Padley | Padley | Padley | Padley | Padley | Padley | Padley | Padley | Padley | Padley | Padley | Powell | Powell | Powell |
| Pontypridd | Pearson | Pearson | Pearson | Pearson | Pearson | Pearson | Pearson | Pearson | Pearson | Pearson | John | John | John | John | John | John | John | John |
| Rhondda East | Mainwaring | Mainwaring | Mainwaring | Mainwaring | E. Davies | E. Davies | E. Davies | E. Davies | E. Davies | E. Davies | E. Davies | E. Davies | | | | | | |
| Rhondda W / Rhondda ('74) | I. Thomas | I. Thomas | I. Thomas | I. Thomas | I. Thomas | I. Thomas | I. Thomas | I. Thomas | A. Jones | A. Jones | A. Jones | A. Jones | A. Jones | A. Jones | A. Jones | A. Jones | A. Jones | A. Jones |
| Swansea East | Mort | Mort | Mort | Mort | Mort | McBride | McBride | McBride | McBride | McBride | McBride | McBride | McBride | Anderson | Anderson | Anderson | Anderson | Anderson |
| Swansea West | P. Morris | P. Morris | P. Morris | P. Morris | H. Rees | H. Rees | A. Williams | A. Williams | A. Williams | A. Williams | A. Williams | A. Williams | A. Williams | A. Williams | A. Williams | A. Williams | A. Williams | A. Williams |
| Cardiff North | | | | | | | | | | | | | Grist | Grist | Grist | Grist | Grist | Grist |
$^1$moved to Gwent 1983

### 1983 to 2024 (16 seats)

Conservative  Independent  Labour  Liberal Democrats
| Constituency | 1983 | 84 | 1987 | 89 | 91 | 1992 | 1997 | 2001 | 02 | 2005 | 2010 | 12 | 2015 | 16 | 2017 | 2019 | 22 | 23 | 24 |
| Aberavon | Morris | Morris | Morris | Morris | Morris | Morris | Morris | Francis | Francis | Francis | Francis | Francis | Kinnock | Kinnock | Kinnock | Kinnock | Kinnock | Kinnock | Kinnock |
| Cardiff S & Penarth | Callaghan | Callaghan | Michael | Michael | Michael | Michael | Michael | Michael | Michael | Michael | Michael | Doughty | Doughty | Doughty | Doughty | Doughty | Doughty | Doughty | Doughty |
| Cynon Valley | I. Evans | Clwyd | Clwyd | Clwyd | Clwyd | Clwyd | Clwyd | Clwyd | Clwyd | Clwyd | Clwyd | Clwyd | Clwyd | Clwyd | Clwyd | Winter | Winter | Winter | Winter |
| M Tydfil & Rhymney $^1$ | Rowlands | Rowlands | Rowlands | Rowlands | Rowlands | Rowlands | Rowlands | Havard | Havard | Havard | Havard | Havard | G. Jones | G. Jones | G. Jones | G. Jones | G. Jones | G. Jones | G. Jones |
| Neath | Coleman | Coleman | Coleman | Coleman | Hain | Hain | Hain | Hain | Hain | Hain | Hain | Hain | Rees | Rees | Rees | Rees | → | → | → |
| Ogmore | Powell | Powell | Powell | Powell | Powell | Powell | Powell | Powell | Irranca-Davies | Irranca-Davies | Irranca-Davies | Irranca-Davies | Irranca-Davies | Elmore | Elmore | Elmore | Elmore | Elmore | Elmore |
| Pontypridd | John | John | John | Howells | Howells | Howells | Howells | Howells | Howells | Howells | O. Smith | O. Smith | O. Smith | O. Smith | O. Smith | Davies-Jones | Davies-Jones | Davies-Jones | Davies-Jones |
| Rhondda | Rogers | Rogers | Rogers | Rogers | Rogers | Rogers | Rogers | Bryant | Bryant | Bryant | Bryant | Bryant | Bryant | Bryant | Bryant | Bryant | Bryant | Bryant | Bryant |
| Swansea East | Anderson | Anderson | Anderson | Anderson | Anderson | Anderson | Anderson | Anderson | Anderson | James | James | James | Harris | Harris | Harris | Harris | Harris | Harris | Harris |
| Swansea West | A. Williams | A. Williams | A. Williams | A. Williams | A. Williams | A. Williams | A. Williams | A. Williams | A. Williams | A. Williams | G. Davies | G. Davies | G. Davies | G. Davies | G. Davies | G. Davies | G. Davies | → | → |
| Cardiff West | Terlezki | Terlezki | Morgan | Morgan | Morgan | Morgan | Morgan | Brennan | Brennan | Brennan | Brennan | Brennan | Brennan | Brennan | Brennan | Brennan | Brennan | Brennan | Brennan |
| Gower | Wardell | Wardell | Wardell | Wardell | Wardell | Wardell | Caton | Caton | Caton | Caton | Caton | Caton | B. Davies | B. Davies | Antoniazzi | Antoniazzi | Antoniazzi | Antoniazzi | Antoniazzi |
| Bridgend | Hubbard-Miles | Hubbard-Miles | Griffiths | Griffiths | Griffiths | Griffiths | Griffiths | Griffiths | Griffiths | Moon | Moon | Moon | Moon | Moon | Moon | Wallis | Wallis | Wallis | Wallis |
| Cardiff Central | Grist | Grist | Grist | Grist | Grist | Owen Jones | Owen Jones | Owen Jones | Owen Jones | Willott | Willott | Willott | Stevens | Stevens | Stevens | Stevens | Stevens | Stevens | Stevens |
| Cardiff North | G. H. Jones | G. H. Jones | G. H. Jones | G. H. Jones | G. H. Jones | G. H. Jones | Morgan | Morgan | Morgan | Morgan | J. Evans | J. Evans | C. Williams | C. Williams | McMorrin | McMorrin | McMorrin | McMorrin | McMorrin |
| Vale of Glamorgan | Gower | Gower | Gower | J. Smith | J. Smith | Sweeney | J. Smith | J. Smith | J. Smith | J. Smith | Cairns | Cairns | Cairns | Cairns | Cairns | Cairns | Cairns | Cairns | Cairns |
$^1$ partly in Gwent 1997–2024

### 2024 to present (13 seats)

Labour
| Constituency | 2024 |
| Aberafan Maesteg | Kinnock |
| Bridgend | Elmore |
| Cardiff East | Stevens |
| Cardiff North | McMorrin |
| Cardiff South and Penarth | Doughty |
| Cardiff West | Barros-Curtis |
| Gower | Antoniazzi |
| Merthyr Tydfil and Aberdare | Jones |
| Neath and Swansea East | Harris |
| Pontypridd | Davies-Jones |
| Rhondda and Ogmore | Bryant |
| Swansea West | Bell |
| Vale of Glamorgan | Narayan |