# Pontypridd (UK Parliament constituency)

Pontypridd (/ˌpɒntɪˈpriːð/ PON-tih-PREEDH) is a constituency represented in the House of Commons of the UK Parliament since 2019 by Alex Davies-Jones of the Labour Party.
The constituency retained its name, but with substantial boundary changes, as part of the 2023 review of Westminster constituencies and under the June 2023 final recommendations of the Boundary Commission for Wales for the 2024 general election.

## Boundaries
### 1918–1983

The Pontypridd constituency was created in its original form from parts of the old South Glamorganshire & East Glamorganshire constituencies as part of the Representation of the People Act 1918 (sometimes referred to as 'The Fourth Reform Act') which granted virtually all men over 21 the right to vote, extended voting rights to women over 30 years of age, & increased the number of the now abolished University constituencies. Part of this Act also effected a 'General Redistribution of Seats' on an 'equitable basis'. It originally included the old Borough of Cowbridge, the Cowbridge Rural District (which included Ystradowen, St Athan, Llantwit Major & Llandow)$^{:map}$ & the Urban District of Pontypridd plus the Rural District of Llantrisant & Llantwit Fardre. The constituency remained unchanged from this form until the boundary changes implemented in 1983.

### 1983–2010

Under the Third Periodic Parliamentary Boundary Review's proposals, Cowbridge Borough and the southern part of the former Cowbridge Rural District were removed and placed in the Vale of Glamorgan constituency, and additionally the communities of Llanharry, Llanharan, and Brynna (i.e. the northern part of the former Cowbridge RDC) were moved into the Ogmore constituency. However, the communities of Creigiau and Pentyrch were added to the seat at this time.

### 2010–2024

The Fifth Periodic Parliamentary Boundary Review for Wales placed the Cilfynydd and Glyncoch wards in the Cynon Valley (UK Parliament constituency), and the Creigiau and Pentyrch wards in the Cardiff West (UK Parliament constituency). These changes were put in place for the 2010 general election. The revised Pontypridd constituency could be split into two parts, a northern part containing the town itself, and a southern part focused on Llantrisant. In Pontypridd township itself the wards are: Town, Treforest, Rhondda (consisting of Hopkinstown, Maesycoed, Pantygraigwen, Trehafod, and Pwllgwaun), Graig, Trallwng, Rhydyfelin Central/Ilan, and Hawthorn. The southern half consisted of the following wards: Taff's Well, Beddau, Church Village, Tonteg, Llantwit Fardre, Llantrisant, Pontyclun, Talbot Green, Tonyrefail East and Tonyrefail West.

### 2024–present

Under the 2023 boundary review, the constituency was defined as being composed of the following wards of the County Borough of Rhondda Cynon Taf, as they existed on 1 December 2020:
* Abercynon; Beddau; Brynna; Church Village; Cilfynydd; Glyncoch; Graig; Hawthorn; Llanharan; Llanharry; Llantrisant Town; Llantwit Fardre; Mountain Ash East; Mountain Ash West; Penrhiwceiber; Pontypridd Town; Rhondda; Rhydfelen Central/Ilan; Talbot Green; Ton-teg; Trallwng; Treforest; Tyn-y-nant; Ynysybwl.
The constituency was extended northwards, taking a substantial part of the abolished Cynon Valley constituency comprising the wards of Abercynon, Cilfynydd, Glyncoch, Mountain Ash East, Mountain Ash West, Penrhiwceiber, and Ynysybwl. In addition, Llanharry, Llanharan, and Brynna were returned from Ogmore, which was now also abolished. To partly compensate, Taff's Well was transferred to Cardiff North; Pontyclun to Cardiff West; and Tonyrefail to the new constituency of Rhondda and Ogmore.
Following local government boundary reviews which came into effect in May 2022, the constituency now comprises the following Rhondda Cynon Taf wards from the 2024 general election:
* Abercynon; Beddau and Tyn-y-nant; Brynna and Llanharan; Church Village; Cilfynydd; Glyn-coch; Graig and Pontypridd West; Hawthorn and Lower Rhydfelen; Llanharry; Llantrisant Town and Talbot Green; Llantwit Fardre; Mountain Ash; Penrhiw-ceiber; Pontyclun West (part); Pontypridd Town; Rhydfelen Central; Ton-teg; Trallwng; Treforest; Upper Rhydfelen and Glyn-taf; Ynysybwl.

## Constituency Profile

One can think of the constituency as being divided between a 'suburban' district in the south and communities that grew in the industrial revolution to the north; the southern area, particularly between Church Village and Llantrisant, contains much new residential and light industrial development, and benefits from good transport links due to its proximity to the M4. This section has a growing population and is an important 'dormitory' for Cardiff. The northern parts, particularly Tonyrefail and the northern end of Pontypridd town consists of large sections of 19th century housing and suffered high unemployment in the 1980s as the old industries closed. However, in recent years, economic recovery has been firm, especially considered with neighbouring constituencies to the north.

## Members of Parliament

Like many seats in South Wales, Pontypridd has been held by the Labour party for over 100 years. In all the years since the Labour Party first took the seat in the 1922 by-election, its smallest majority has been the 2,785 (7.6%) by which it held the seat over the Liberal Democrats in 2010. Generally its majorities have been considerably higher.
| Election | Member | Party |
| 1918 | Thomas Arthur Lewis | Coalition Liberal |
| 1922 by-election | Thomas Isaac Mardy Jones | Labour |
| 1931 by-election | David Lewis Davies | Labour |
| 1938 by-election | Arthur Pearson | Labour |
| 1970 | Brynmor John | Labour |
| 1989 by-election | Dr Kim Howells | Labour |
| 2010 | Owen Smith | Labour |
| 2019 | Alex Davies-Jones | Labour |

## Elections
### Elections in the 1910s

1918 general election: Pontypridd$^d$ :
| Party | Party | Candidate | Votes | % | ±% |
| C | Liberal | Thomas Arthur Lewis | 13,327 | 56.1 | N/A |
| | Labour | David Lewis Davies | 10,152 | 42.8 | N/A |
| | Conservative | Arthur Seaton | 260 | 1.1 | N/A |
| Majority | Majority | Majority | 3,175 | 13.3 | N/A |
| Turnout | Turnout | Turnout | 23,739 | 68.3 | N/A |
| Registered electors | Registered electors | Registered electors | 34,778 | | |
| | Liberal win (new seat) | Liberal win (new seat) | Liberal win (new seat) | Liberal win (new seat) | Liberal win (new seat) |
| C indicates candidate endorsed by the coalition government. ||||||

### Elections in the 1920s

1922 Pontypridd by-election :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Thomas Mardy-Jones | 16,630 | 57.0 | +14.2 |
| C | Liberal | Thomas Arthur Lewis | 12,550 | 43.0 | −13.1 |
| Majority | Majority | Majority | 4,080 | 14.0 | N/A |
| Turnout | Turnout | Turnout | 29,180 | 72.8 | +4.5 |
| Registered electors | Registered electors | Registered electors | 40,071 | | |
| | Labour gain from Liberal | Labour gain from Liberal | Swing | | |
| C indicates candidate endorsed by the coalition government. ||||||
1922 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Thomas Mardy-Jones | 14,884 | 47.2 | +4.4 |
| | National Liberal | Rhys Rhys-Williams | 8,667 | 27.5 | −28.6 |
| | Unionist | J Griffith Jones | 7,994 | 25.4 | N/A |
| Majority | Majority | Majority | 6,217 | 19.7 | N/A |
| Turnout | Turnout | Turnout | 31,545 | 76.8 | +8.5 |
| Registered electors | Registered electors | Registered electors | 41,087 | | |
| | Labour hold | Labour hold | Swing | | |
1923 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Thomas Mardy-Jones | 16,837 | 54.9 | +7.7 |
| | Liberal | Jon David Rees | 13,839 | 45.1 | +17.6 |
| Majority | Majority | Majority | 2,998 | 9.8 | −9.9 |
| Turnout | Turnout | Turnout | 30,676 | 76.0 | −0.8 |
| Registered electors | Registered electors | Registered electors | 40,379 | | |
| | Labour hold | Labour hold | Swing | -6.0 | |
1924 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Thomas Mardy-Jones | 18,301 | 55.9 | +1.0 |
| | Conservative | David J. Evans | 14,425 | 44.1 | N/A |
| Majority | Majority | Majority | 3,876 | 11.9 | +2.1 |
| Turnout | Turnout | Turnout | 32,726 | 79.6 | +3.6 |
| Registered electors | Registered electors | Registered electors | 41,099 | | |
| | Labour hold | Labour hold | Swing | +1.0 | |
1929 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Thomas Mardy-Jones | 20,835 | 53.1 | −2.8 |
| | Liberal | John Victor Evans | 14,421 | 36.8 | N/A |
| | Conservative | May Gordon Williams | 3,967 | 10.1 | −34.0 |
| Majority | Majority | Majority | 6,414 | 16.3 | +4.4 |
| Turnout | Turnout | Turnout | 39,223 | 82.0 | +2.4 |
| Registered electors | Registered electors | Registered electors | 47,860 | | |
| | Labour hold | Labour hold | Swing | +2.3 | |

### Elections in the 1930s

1931 Pontypridd by-election :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | David Lewis Davies | 20,687 | 59.9 | +6.8 |
| | Liberal | Geoffrey Crawshay | 8,368 | 24.3 | −12.5 |
| | Conservative | David J Evans | 5,489 | 15.9 | +5.8 |
| Majority | Majority | Majority | 12,319 | 35.6 | +19.3 |
| Turnout | Turnout | Turnout | 34,544 | 73.0 | −9.0 |
| Registered electors | Registered electors | Registered electors | 34,733 | | |
| | Labour hold | Labour hold | Swing | +9.7 | |
1931 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | David Lewis Davies | 21,751 | 58.4 | +5.3 |
| | Liberal | Bernard Acworth | 13,937 | 37.4 | +0.6 |
| | Independent Labour | Thomas Mardy-Jones | 1,110 | 3.0 | N/A |
| | New Party | William Lowell | 466 | 1.3 | N/A |
| Majority | Majority | Majority | 7,814 | 21.0 | +4.7 |
| Turnout | Turnout | Turnout | 37,264 | 78.7 | −3.3 |
| Registered electors | Registered electors | Registered electors | 47,346 | | |
| | Labour hold | Labour hold | Swing | +2.3 | |
1935 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | David Lewis Davies | Unopposed | Unopposed | Unopposed |
| Registered electors | Registered electors | Registered electors | 48,469 | | |
| | Labour hold | Labour hold | Labour hold | Labour hold | Labour hold |
1938 Pontypridd by-election :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Arthur Pearson$^c$ | 22,159 | 59.9 | N/A |
| | National Liberal | Juliet Rhys-Williams | 14,810 | 40.1 | N/A |
| Majority | Majority | Majority | 7,349 | 19.8 | N/A |
| Turnout | Turnout | Turnout | 36,969 | 69.3 | N/A |
| Registered electors | Registered electors | Registered electors | 36,846 | | |
| | Labour hold | Labour hold | Swing | N/A | |

### Elections in the 1940s

1945 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Arthur Pearson | 27,823 | 68.6 | N/A |
| | Conservative | Cennydd Traherne | 7,260 | 17.9 | −22.2 |
| | Liberal | John Ellis Williams | 5,464 | 13.5 | N/A |
| Majority | Majority | Majority | 20,563 | 50.7 | N/A |
| Turnout | Turnout | Turnout | 40,547 | 76.0 | N/A |
| Registered electors | Registered electors | Registered electors | 53,346 | | |
| | Labour hold | Labour hold | Swing | +15.4 | |

### Elections in the 1950s

1950 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Arthur Pearson | 30,945 | 68.9 | +0.3 |
| | Conservative | Thomas Esmôr Rhys Rhys-Roberts | 9,049 | 20.2 | +2.3 |
| | Liberal | David Irwin Charles Lewis | 4,895 | 10.9 | −2.6 |
| Majority | Majority | Majority | 21,896 | 48.7 | −2.0 |
| Turnout | Turnout | Turnout | 44,889 | 84.3 | +8.3 |
| Registered electors | Registered electors | Registered electors | 53,275 | | |
| | Labour hold | Labour hold | Swing | -1.0 | |
1951 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Arthur Pearson | 32,586 | 72.3 | +3.4 |
| | Conservative | James Lionel Manning | 12,511 | 27.7 | +7.5 |
| Majority | Majority | Majority | 20,075 | 44.6 | −4.1 |
| Turnout | Turnout | Turnout | 45,097 | 83.3 | −1.0 |
| Registered electors | Registered electors | Registered electors | 54,126 | | |
| | Labour hold | Labour hold | Swing | -2.1 | |
1955 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Arthur Pearson | 28,881 | 71.1 | −1.2 |
| | Conservative | Thomas Tyrrell | 11,718 | 28.9 | +1.2 |
| Majority | Majority | Majority | 17,163 | 42.2 | −2.4 |
| Turnout | Turnout | Turnout | 40,599 | 74.9 | −8.4 |
| Registered electors | Registered electors | Registered electors | 54,214 | | |
| | Labour hold | Labour hold | Swing | -1.1 | |
1959 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Arthur Pearson | 29,853 | 68.2 | −2.9 |
| | Conservative | Brandon Rhys-Williams | 13,896 | 31.8 | +2.9 |
| Majority | Majority | Majority | 15,957 | 36.4 | −5.8 |
| Turnout | Turnout | Turnout | 43,749 | 81.2 | +6.3 |
| Registered electors | Registered electors | Registered electors | 53,903 | | |
| | Labour hold | Labour hold | Swing | -2.9 | |

### Elections in the 1960s

1964 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Arthur Pearson | 29,533 | 71.4 | +3.2 |
| | Conservative | John Warrender | 11,859 | 28.6 | −3.2 |
| Majority | Majority | Majority | 17,674 | 42.8 | +6.4 |
| Turnout | Turnout | Turnout | 41,392 | 76.9 | −4.3 |
| Registered electors | Registered electors | Registered electors | 53,859 | | |
| | Labour hold | Labour hold | Swing | +3.2 | |
1966 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Arthur Pearson | 30,840 | 74.9 | +3.5 |
| | Conservative | Kenneth Green-Wanstall | 10,325 | 25.1 | −3.5 |
| Majority | Majority | Majority | 20,515 | 49.8 | +7.0 |
| Turnout | Turnout | Turnout | 41,365 | 74.7 | −2.2 |
| Registered electors | Registered electors | Registered electors | 55,088 | | |
| | Labour hold | Labour hold | Swing | +3.6 | |

### Elections in the 1970s

1970 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Brynmor John | 28,414 | 58.5 | −16.4 |
| | Conservative | Michael Withers | 8,205 | 16.9 | −8.2 |
| | Liberal | Mary Murphy | 6,871 | 14.2 | N/A |
| | Plaid Cymru | Errol Jones | 5,059 | 10.4 | N/A |
| Majority | Majority | Majority | 20,209 | 41.6 | −8.2 |
| Turnout | Turnout | Turnout | 48,549 | 74.4 | −0.3 |
| Registered electors | Registered electors | Registered electors | 65,265 | | |
| | Labour hold | Labour hold | Swing | -4.1 | |
February 1974 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Brynmor John | 28,028 | 52.0 | −6.5 |
| | Conservative | Alun Jones | 11,406 | 21.1 | +4.2 |
| | Liberal | Mary Murphy | 9,889 | 18.3 | +4.1 |
| | Plaid Cymru | Richard Kemp | 4,612 | 8.6 | −1.8 |
| Majority | Majority | Majority | 16,622 | 30.9 | −10.7 |
| Turnout | Turnout | Turnout | 53,935 | 77.4 | +3.0 |
| Registered electors | Registered electors | Registered electors | 69,685 | | |
| | Labour hold | Labour hold | Swing | -5.4 | |
October 1974 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Brynmor John | 29,302 | 56.6 | +4.6 |
| | Conservative | Alun Jones | 10,528 | 20.3 | −0.8 |
| | Liberal | Mary Murphy | 8,050 | 15.5 | −2.8 |
| | Plaid Cymru | Richard Kemp | 3,917 | 7.6 | −1.0 |
| Majority | Majority | Majority | 18,774 | 36.3 | +5.5 |
| Turnout | Turnout | Turnout | 51,797 | 73.8 | −3.6 |
| Registered electors | Registered electors | Registered electors | 70,200 | | |
| | Labour hold | Labour hold | Swing | +2.7 | |
1979 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Brynmor John | 32,801 | 56.0 | −0.6 |
| | Conservative | Michael Clay | 17,114 | 29.2 | +8.9 |
| | Liberal | Hugh Penri-Williams | 6,228 | 10.6 | −4.9 |
| | Plaid Cymru | Alun Roberts | 2,200 | 3.8 | −3.8 |
| | National Front | R G Davies | 263 | 0.4 | N/A |
| Majority | Majority | Majority | 15,687 | 26.8 | −9.5 |
| Turnout | Turnout | Turnout | 58,606 | 78.1 | +4.3 |
| Registered electors | Registered electors | Registered electors | 75,050$^b$ | | |
| | Labour hold | Labour hold | Swing | -4.7 | |

### Elections in the 1980s

1983 general election: Pontypridd$^a$ :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Brynmor John | 20,188 | 45.6 | −10.4 |
| | SDP | Richard Langridge | 11,444 | 25.9 | +15.3 |
| | Conservative | Richard Evans | 10,139 | 22.9 | −6.3 |
| | Plaid Cymru | Janet Davies | 2,065 | 4.7 | +0.9 |
| | Green | Alwyn K. Jones | 449 | 1.0 | N/A |
| Majority | Majority | Majority | 8,744 | 19.7 | −7.1 |
| Turnout | Turnout | Turnout | 44,285 | 72.7 | −5.4 |
| Registered electors | Registered electors | Registered electors | 60,883 | | |
| | Labour hold | Labour hold | Swing | −5.2 | |
1987 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Brynmor John | 26,422 | 56.3 | +10.7 |
| | Conservative | Desmond Swayne | 9,145 | 19.5 | −3.4 |
| | SDP | Peter Sain-Ley-Berry | 8,865 | 18.9 | −7.0 |
| | Plaid Cymru | Delme Bowen | 2,498 | 5.3 | +0.6 |
| Majority | Majority | Majority | 17,277 | 36.8 | +17.1 |
| Turnout | Turnout | Turnout | 46,930 | 76.6 | +3.9 |
| Registered electors | Registered electors | Registered electors | 61,255 | | |
| | Labour hold | Labour hold | Swing | +7.1 | |
1989 Pontypridd by-election :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Kim Howells | 20,549 | 53.4 | −2.9 |
| | Plaid Cymru | Syd Morgan | 9,775 | 25.3 | +20.0 |
| | Conservative | Nigel Evans | 5,212 | 13.5 | −6.0 |
| | SLD | Tom Ellis | 1,500 | 3.9 | −15.0 |
| | SDP | Terry Thomas | 1,199 | 3.1 | N/A |
| | Communist | David Richards | 239 | 0.6 | N/A |
| | Independent | David Black | 57 | 0.1 | N/A |
| Majority | Majority | Majority | 10,794 | 28.1 | −8.7 |
| Turnout | Turnout | Turnout | 38,511 | 62.0 | −14.6 |
| Registered electors | Registered electors | Registered electors | 61,193 | | |
| | Labour hold | Labour hold | Swing | −11.5 | |

### Elections in the 1990s

1992 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Kim Howells | 29,722 | 60.8 | +4.5 |
| | Conservative | Peter D. Donnelly | 9,925 | 20.3 | +0.8 |
| | Plaid Cymru | Delme Bowen | 4,448 | 9.1 | +3.8 |
| | Liberal Democrats | Steve Belzak | 4,180 | 8.5 | −10.4 |
| | Green | Emma J. Jackson | 615 | 1.3 | N/A |
| Majority | Majority | Majority | 19,797 | 40.5 | +3.7 |
| Turnout | Turnout | Turnout | 48,890 | 79.3 | +2.7 |
| Registered electors | Registered electors | Registered electors | 61,685 | | |
| | Labour hold | Labour hold | Swing | +1.8 | |
1997 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Kim Howells | 29,290 | 63.9 | +3.1 |
| | Liberal Democrats | Nigel Howells | 6,161 | 13.4 | +4.9 |
| | Conservative | Jonathan M. Cowen | 5,910 | 12.9 | −7.4 |
| | Plaid Cymru | Owain Llewelyn | 2,977 | 6.5 | −2.6 |
| | Referendum | John Wood | 874 | 1.9 | N/A |
| | Socialist Labour | Peter Skelly | 380 | 0.8 | N/A |
| | Communist | Robert Griffiths | 178 | 0.4 | N/A |
| | Natural Law | Anthony G. Moore | 85 | 0.2 | N/A |
| Majority | Majority | Majority | 23,129 | 50.4 | +9.9 |
| Turnout | Turnout | Turnout | 45,855 | 71.4 | −7.9 |
| Registered electors | Registered electors | Registered electors | 64,185 | | |
| | Labour hold | Labour hold | Swing | −0.9 | |

### Elections in the 2000s

2001 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Kim Howells | 22,963 | 59.9 | −4.0 |
| | Plaid Cymru | Bleddyn Hancock | 5,279 | 13.8 | +7.3 |
| | Conservative | Prudence Dailey | 5,096 | 13.3 | +0.4 |
| | Liberal Democrats | Eric Brooke | 4,152 | 10.8 | −2.6 |
| | UKIP | Susan Warry | 603 | 1.6 | N/A |
| | ProLife Alliance | Joseph Biddulph | 216 | 0.6 | N/A |
| Majority | Majority | Majority | 17,684 | 46.1 | −4.3 |
| Turnout | Turnout | Turnout | 38,309 | 58.0 | −13.4 |
| Registered electors | Registered electors | Registered electors | 71,768 | | |
| | Labour hold | Labour hold | Swing | −5.6 | |
2005 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Kim Howells | 20,919 | 52.8 | −7.1 |
| | Liberal Democrats | Mike Powell | 7,728 | 19.5 | +8.7 |
| | Conservative | Quentin Edwards | 5,321 | 13.4 | +0.1 |
| | Plaid Cymru | Julie Richards | 4,420 | 11.2 | −2.6 |
| | UKIP | David Bevan | 1,013 | 2.6 | +1.0 |
| | Communist | Robert Griffiths | 233 | 0.6 | N/A |
| Majority | Majority | Majority | 13,191 | 33.3 | −12.8 |
| Turnout | Turnout | Turnout | 39,634 | 60.9 | +2.9 |
| Registered electors | Registered electors | Registered electors | 64,310 | | |
| | Labour hold | Labour hold | Swing | −7.9 | |

### Elections in the 2010s

2010 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Owen Smith | 14,220 | 38.8 | −15.4 |
| | Liberal Democrats | Mike Powell | 11,435 | 31.2 | +11.2 |
| | Conservative | Lee Gonzalez | 5,932 | 16.2 | +4.6 |
| | Plaid Cymru | Ioan Bellin | 2,673 | 7.3 | −3.7 |
| | UKIP | David Bevan | 1,229 | 3.4 | +0.8 |
| | Socialist Labour | Simon Parsons | 456 | 1.2 | N/A |
| | Christian | Donald Watson | 365 | 1.0 | N/A |
| | Green | John Matthews | 361 | 1.0 | N/A |
| Majority | Majority | Majority | 2,785 | 7.6 | −25.7 |
| Turnout | Turnout | Turnout | 36,671 | 63.0 | −0.2 |
| Registered electors | Registered electors | Registered electors | 58,205 | | |
| | Labour hold | Labour hold | Swing | −13.3 | |
2015 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Owen Smith | 15,554 | 41.1 | +2.3 |
| | Conservative | Ann-Marie Mason | 6,569 | 17.3 | +1.1 |
| | UKIP | Andrew Tomkinson | 5,085 | 13.4 | +10.0 |
| | Liberal Democrats | Mike Powell | 4,904 | 12.9 | −18.3 |
| | Plaid Cymru | Osian Lewis | 4,348 | 11.5 | +4.2 |
| | Green | Katy Clay | 992 | 2.6 | +1.6 |
| | Socialist Labour | Damien Biggs | 332 | 0.9 | −0.3 |
| | TUSC | Esther Pearson | 98 | 0.3 | N/A |
| Rejected ballots | Rejected ballots | Rejected ballots | 96 | | |
| Majority | Majority | Majority | 8,985 | 23.8 | +16.2 |
| Turnout | Turnout | Turnout | 37,882 | 64.3 | +1.3 |
| Registered electors | Registered electors | Registered electors | 58,940 | | |
| | Labour hold | Labour hold | Swing | −0.1 | |
Of the 96 rejected ballots:
* 70 were either unmarked or it was uncertain who the vote was for.
* 26 voted for more than one candidate.
2017 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Owen Smith | 22,103 | 55.4 | +14.3 |
| | Conservative | Juliette Ash | 10,655 | 26.7 | +9.4 |
| | Plaid Cymru | Fflur Elin | 4,102 | 10.3 | −1.2 |
| | Liberal Democrats | Mike Powell | 1,963 | 4.9 | −8.0 |
| | UKIP | Robin Hunter-Clarke | 1,071 | 2.7 | −10.7 |
| Majority | Majority | Majority | 11,448 | 28.7 | +4.9 |
| Turnout | Turnout | Turnout | 39,894 | 65.9 | +1.6 |
| Registered electors | Registered electors | Registered electors | 60,564 | | |
| | Labour hold | Labour hold | Swing | +2.5 | |
2019 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Alex Davies-Jones | 17,381 | 44.5 | −10.9 |
| | Conservative | Sam Trask | 11,494 | 29.4 | +2.7 |
| | Plaid Cymru | Fflur Elin | 4,990 | 12.8 | +2.5 |
| | Brexit Party | Steve Bayliss | 2,917 | 7.5 | N/A |
| | Independent | Mike Powell | 1,792 | 4.6 | N/A |
| | Independent | Sue Prior | 337 | 0.9 | N/A |
| | Independent | Jonathan Bishop | 149 | 0.4 | N/A |
| Majority | Majority | Majority | 5,890 | 15.1 | −13.6 |
| Turnout | Turnout | Turnout | 39,060 | 64.7 | −1.2 |
| Registered electors | Registered electors | Registered electors | 60,327 | | |
| | Labour hold | Labour hold | Swing | −6.8 | |

### Elections in the 2020s

2024 general election: Pontypridd :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Alex Davies-Jones | 16,225 | 41.2 | −5.4 |
| | Reform UK | Steven Wayne Bayliss | 7,823 | 19.9 | +11.4 |
| | Plaid Cymru | William Jac Rees | 5,275 | 13.4 | +2.5 |
| | Conservative | Jack Robson | 3,775 | 9.6 | −17.7 |
| | Independent | Wayne Owen | 2,567 | 6.5 | N/A |
| | Green | Angela Karadog | 1,865 | 4.7 | +4.5 |
| | Liberal Democrats | David Mathias | 1,606 | 4.1 | +2.7 |
| | Independent | Joe Biddulph | 198 | 0.5 | N/A |
| | Independent | Jonathan Bishop | 44 | 0.1 | −0.2 |
| Majority | Majority | Majority | 8,402 | 21.3 | +6.2 |
| Turnout | Turnout | Turnout | 39,378 | 51.8 | −10.0 |
| Registered electors | Registered electors | Registered electors | 75,951 | | |
| | Labour hold | Labour hold | Swing | −8.4 | |