# Clwyd South (UK Parliament constituency)

Clwyd South (Welsh: De Clwyd) was a constituency of the House of Commons of the Parliament of the United Kingdom (Westminster). The constituency was created in 1997, and it elected one Member of Parliament (MP) by the first past the post method of election.
The Clwyd South Senedd constituency was created with the same boundaries in 1999 (as an Assembly constituency).
The constituency was abolished as part of the 2023 Periodic Review of Westminster constituencies and under the June 2023 final recommendations of the Boundary Commission for Wales. Its wards were split between Clwyd East, Dwyfor Meirionnydd, Montgomeryshire and Glyndŵr, and Wrexham.

## Boundaries

The constituency straddled the authorities of Denbighshire and the borough of Wrexham. Main population centres included the suburbs of Ruabon, Chirk, Rhosllannerchrugog, Cefn Mawr and Coedpoeth to the south of the city of Wrexham, in addition to Llangollen and Corwen further up the Dee valley to the west. Until the 2010 election, the constituency included a small part of the preserved county of Powys. This anomaly was resolved by the Boundary Commission for Wales with the boundaries first used in 2010.
The constituency comprised the following electoral wards:
* From Wrexham: Overton, Bronington, Dyffryn Ceiriog/Ceiriog Valley, Chirk North, Gwenfro, Johnstown, Llangollen Rural, Marchwiel, Penycae, Penycae and Ruabon South, Plas Madoc, Ponciau, Ruabon, Bryn Cefn, Minera, Brymbo, Coedpoeth, Cefn, Chirk South, Esclusham, New Broughton, Pant
* From Denbighshire: Corwen, Llangollen, Llandrillo

## Members of Parliament

| Election | Member | Party |
| 1997 | Martyn Jones | Labour |
| 2010 | Susan Elan Jones | Labour |
| 2019 | Simon Baynes | Conservative |
| 2024 | Constituency abolished | Constituency abolished |

## Elections
### Elections in the 1990s

General election 1997: Clwyd South :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Martyn Jones | 22,901 | 58.1 | N/A |
| | Conservative | Boris Johnson | 9,091 | 23.1 | N/A |
| | Liberal Democrats | Andrew Chadwick | 3,684 | 9.4 | N/A |
| | Plaid Cymru | Gareth Williams | 2,500 | 6.3 | N/A |
| | Referendum | Alex Lewis | 1,207 | 3.1 | N/A |
| Majority | Majority | Majority | 13,810 | 35.0 | N/A |
| Turnout | Turnout | Turnout | 39,383 | 73.6 | N/A |
| Registered electors | Registered electors | Registered electors | 53,495 | | |
| | Labour win (new seat) | Labour win (new seat) | Labour win (new seat) | Labour win (new seat) | Labour win (new seat) |

### Elections in the 2000s

General election 2001: Clwyd South :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Martyn Jones | 17,217 | 51.4 | −6.7 |
| | Conservative | Tom Biggins | 8,319 | 24.8 | +1.7 |
| | Plaid Cymru | Dyfed Edwards | 3,982 | 11.9 | +5.6 |
| | Liberal Democrats | David Griffiths | 3,426 | 10.2 | +0.8 |
| | UKIP | Edwina Theunissen | 552 | 1.6 | N/A |
| Majority | Majority | Majority | 8,898 | 26.6 | −8.4 |
| Turnout | Turnout | Turnout | 33,496 | 62.4 | −11.2 |
| Registered electors | Registered electors | Registered electors | 53,680 | | |
| | Labour hold | Labour hold | Swing | -4.2 | |
General election 2005: Clwyd South :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Martyn Jones | 14,808 | 45.0 | −6.4 |
| | Conservative | Tom Biggins | 8,460 | 25.7 | +0.9 |
| | Liberal Democrats | Deric Burnham | 5,105 | 15.5 | +5.3 |
| | Plaid Cymru | Mark Strong | 3,111 | 9.4 | −2.5 |
| | Forward Wales | Alwyn Humphreys | 803 | 2.4 | N/A |
| | UKIP | Nick Powell | 644 | 2.0 | +0.4 |
| Rejected ballots | Rejected ballots | Rejected ballots | 298 | | |
| Majority | Majority | Majority | 6,348 | 19.3 | −7.3 |
| Turnout | Turnout | Turnout | 32,931 | 62.9 | +0.5 |
| Registered electors | Registered electors | Registered electors | 52,353 | | |
| | Labour hold | Labour hold | Swing | -3.7 | |
Of the 298 rejected ballots:
* 273 were either unmarked or it was uncertain who the vote was for.
* 16 voted for more than one candidate.
* 8 had writing or mark by which the voter could be identified.
* 1 had want of official mark.

### Elections in the 2010s

General election 2010: Clwyd South :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Susan Elan Jones | 13,311 | 38.4 | −6.8 |
| | Conservative | John Bell | 10,477 | 30.2 | +4.8 |
| | Liberal Democrats | Bruce Roberts | 5,965 | 17.2 | +1.7 |
| | Plaid Cymru | Janet Ryder | 3,009 | 8.7 | −0.8 |
| | BNP | Sarah Hynes | 1,100 | 3.2 | N/A |
| | UKIP | Nick Powell | 819 | 2.4 | +0.4 |
| Majority | Majority | Majority | 2,834 | 8.2 | −11.1 |
| Turnout | Turnout | Turnout | 34,681 | 64.5 | +3.3 |
| Registered electors | Registered electors | Registered electors | 53,748 | | |
| | Labour hold | Labour hold | Swing | -5.8 | |
General election 2015: Clwyd South :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Susan Elan Jones | 13,051 | 37.2 | −1.2 |
| | Conservative | David Nicholls | 10,649 | 30.4 | +0.2 |
| | UKIP | Mandy Jones | 5,480 | 15.6 | +13.2 |
| | Plaid Cymru | Mabon ap Gwynfor | 3,620 | 10.3 | +1.6 |
| | Liberal Democrats | Bruce Roberts | 1,349 | 3.8 | −13.4 |
| | Green | Duncan Rees | 915 | 2.6 | N/A |
| Rejected ballots | Rejected ballots | Rejected ballots | 55 | | |
| Majority | Majority | Majority | 2,402 | 6.8 | −1.4 |
| Turnout | Turnout | Turnout | 35,064 | 63.8 | −0.7 |
| Registered electors | Registered electors | Registered electors | 54,996 | | |
| | Labour hold | Labour hold | Swing | -0.7 | |
Of the 55 rejected ballots:
* 39 were either unmarked or it was uncertain who the vote was for.
* 15 voted for more than one candidate.
* 1 had writing or mark by which the voter could be identified.
General election 2017: Clwyd South :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Susan Elan Jones | 19,002 | 50.7 | +13.5 |
| | Conservative | Simon Baynes | 14,646 | 39.1 | +8.7 |
| | Plaid Cymru | Christopher Allen | 2,293 | 6.1 | −4.2 |
| | UKIP | Jeanette Bassford-Barton | 802 | 2.1 | −13.5 |
| | Liberal Democrats | Bruce Roberts | 731 | 2.0 | −1.8 |
| Rejected ballots | Rejected ballots | Rejected ballots | 56 | | |
| Majority | Majority | Majority | 4,356 | 11.6 | +4.8 |
| Turnout | Turnout | Turnout | 37,473 | 68.9 | +5.1 |
| Registered electors | Registered electors | Registered electors | 54,266 | | |
| | Labour hold | Labour hold | Swing | +2.4 | |
Of the 56 rejected ballots:
* 38 were either unmarked or it was uncertain who the vote was for.
* 18 voted for more than one candidate.
General election 2019: Clwyd South :
| Party | Party | Candidate | Votes | % | ±% |
| | Conservative | Simon Baynes | 16,222 | 44.7 | +5.6 |
| | Labour | Susan Elan Jones | 14,983 | 41.3 | −9.4 |
| | Plaid Cymru | Christopher Allen | 2,137 | 5.9 | −0.2 |
| | Liberal Democrats | Calum Davies | 1,496 | 4.1 | +2.1 |
| | Brexit Party | Jamie Adams | 1,468 | 4.0 | N/A |
| Rejected ballots | Rejected ballots | Rejected ballots | 110 | | |
| Majority | Majority | Majority | 1,239 | 3.4 | N/A |
| Turnout | Turnout | Turnout | 36,306 | 67.3 | −1.6 |
| Registered electors | Registered electors | Registered electors | 53,919 | | |
| | Conservative gain from Labour | Conservative gain from Labour | Swing | +7.5 | |
Of the 110 rejected ballots:
* 92 were either unmarked or it was uncertain who the vote was for.
* 18 voted for more than one candidate.