| 7 May 2026 | Scottish Parliament Election 2026 — Regional Lists | Casnewydd Islwyn | Senedd Cymru elections | Reform UK | 0 | — | 1st | Yes |
| 1 May 2025 | Local Elections 2025 | Much Wenlock | Shropshire | Conservative Party | 844 | 50.8% | 1st | Yes |
| 5 May 2022 | Local Elections 2022 | Tawe-Uchaf | Powys | The Labour Party | 572 | 78.6% | 1st | Yes |
| 5 May 2022 | Local Elections 2022 | Crickhowell with Cwmdu & Tretower | Powys | Conservative Party | 459 | 18.9% | 4th | No |
| 5 May 2022 | Local Elections 2022 | Finchley Church End | Barnet | Conservative Party | 2,140 | 14% | 3rd | Yes |
| 5 May 2022 | Local Elections 2022 | Rhyl South | Denbighshire | Conservative Party | 395 | 19.2% | 3rd | No |
| 6 May 2021 | Local Elections 2021 | Much Wenlock | Shropshire | Conservative Party | 931 | 60.6% | 1st | Yes |
| 6 May 2021 | Local Elections 2021 | Petersfield | Cambridge | Conservative Party | 281 | 2.9% | 11th | No |
| 2 May 2019 | Local Elections 2019 | Winsford Over & Verdin | Cheshire West & Chester | Conservative Party | 838 | 10.6% | 6th | No |
| 2 May 2019 | Local Elections 2019 | Preston | Torbay | Conservative Party | 1,200 | 13.8% | 3rd | Yes |
| 2 May 2019 | Local Elections 2019 | Heron | Canterbury | Conservative Party | 1,107 | 14.8% | 2nd | Yes |
| 3 May 2018 | Local Elections 2018 | Finchley Church End | Barnet | Conservative Party | 3,050 | 20.5% | 3rd | Yes |
| 8 June 2017 | UK General Election 2017 | Islwyn | UK Parliamentary general election | Conservative Party | 9,826 | 27.2% | 2nd | No |
| 4 May 2017 | Local Elections 2017 | Tawe-Uchaf | Powys | The Labour Party | 0 | — | 1st | Yes |
| 4 May 2017 | Local Elections 2017 | St. Asaph East | Denbighshire | Conservative Party | 391 | 69.3% | 1st | Yes |
| 4 May 2017 | Local Elections 2017 | Landore | Swansea | Conservative Party | 208 | 7.9% | 4th | No |
| 5 May 2016 | London Assembly Election 2016 — Constituency Members | Barnet and Camden | London Assembly elections (Constituencies) | Conservative Party | 65,242 | 35.5% | 2nd | No |
| 7 May 2015 | Local Elections 2015 | Heron | Canterbury | Conservative Party | 1,982 | 12.7% | 3rd | Yes |
| 7 May 2015 | Local Elections 2015 | Blatchcombe | Torbay | Conservative Party | 1,659 | 14.4% | 1st | Yes |
| 22 May 2014 | Local Elections 2014 | Finchley Church End | Barnet | Conservative Party | 2,197 | 17.8% | 3rd | Yes |
| 3 May 2012 | Local Elections 2012 | West Heath | Rushmoor | Conservative Party | 473 | 8.9% | 5th | No |
| 3 May 2012 | Local Elections 2012 | Tawe-Uchaf | Powys | The Labour Party | 506 | 60.1% | 1st | Yes |
| 5 May 2011 | Local Elections 2011 | Halesworth | Waveney | The Labour Party | 546 | 17.3% | 3rd | No |
| 5 May 2011 | Local Elections 2011 | Blatchcombe | Torbay | Conservative Party | 959 | 15.5% | 3rd | Yes |
| 6 May 2010 | UK General Election 2010 | Islwyn | UK Parliamentary general election | Conservative Party | 4,854 | 14% | 2nd | No |
| 6 May 2010 | Local Elections 2010 | Finchley Church End | Barnet | Conservative Party | 3,403 | 17.1% | 2nd | Yes |
| 4 June 2009 | Local Elections 2009 | Gunton | Waveney | The Labour Party | 958 | 11.3% | 4th | No |
| 1 May 2008 | Local Elections 2008 | Tawe-Uchaf | Powys | The Labour Party | 397 | 45.1% | 2nd | No |
| 1 May 2008 | Local Elections 2008 | Crickhowell | Powys | Conservative Party | 491 | 43.2% | 2nd | No |
| 1 May 2008 | Local Elections 2008 | Newton | Swansea | Conservative Party | 497 | 37.4% | 2nd | No |
| 1 May 2008 | Local Elections 2008 | Rhyl South West | Denbighshire | The Labour Party | 587 | 32.8% | 1st | Yes |
| 3 May 2007 | Local Elections 2007 | Blatchcombe | Torbay | Conservative Party | 874 | 14.3% | 2nd | Yes |
| 3 May 2007 | Local Elections 2007 | Sudbury South | Babergh | Conservative Party | 275 | 14.3% | 4th | No |
| 4 May 2006 | Local Elections 2006 | Finchley Church End | Barnet | Conservative Party | 2,402 | 20.5% | 3rd | Yes |
| 5 May 2005 | Local Elections 2005 | Duryard And Pennsylvania | Exeter | Conservative Party | 1,690 | 31.4% | 2nd | No |
| 10 June 2004 | Local Elections 2004 | Canton | Cardiff | The Labour Party | 1,404 | 11.5% | 3rd | Yes |
| 10 June 2004 | Local Elections 2004 | Rhyl South West | Denbighshire | The Labour Party | 563 | 37.6% | 2nd | Yes |
| 10 June 2004 | Local Elections 2004 | Cove and Southwood | Rushmoor | Conservative Party | 704 | 45% | 2nd | No |
| 10 June 2004 | Local Elections 2004 | Killay North | Swansea | Conservative Party | 212 | 20.9% | 2nd | No |
| 10 June 2004 | Local Elections 2004 | St Thomas | Exeter | Conservative Party | 221 | 10.5% | 3rd | No |
| 1 May 2003 | Local Elections 2003 | Low Waters | South Lanarkshire | Conservative Party | 116 | 7.9% | 3rd | No |
| 1 May 2003 | Local Elections 2003 | Normanston | Waveney | The Labour Party | 467 | 39.4% | 1st | Yes |
| 1 May 2003 | Local Elections 2003 | Ellen | Allerdale | The Labour Party | 0 | — | 1st | Yes |
| 1 May 2003 | Local Elections 2003 | Great Cornard North | Babergh | Conservative Party | 218 | 18% | 4th | No |
| 1 May 2003 | Local Elections 2003 | Cove and Southwood | Rushmoor | Conservative Party | 545 | 38.8% | 2nd | No |
| 2 May 2002 | Local Elections 2002 | Normanston | Waveney | The Labour Party | 680 | 20.6% | 3rd | Yes |
| 2 May 2002 | Local Elections 2002 | Cove and Southwood | Rushmoor | Conservative Party | 537 | 14.2% | 6th | No |
| 7 June 2001 | Local Elections 2001 | Normanston | Waveney | The Labour Party | 1,915 | 61.3% | 1st | No |
| 6 May 1999 | Local Elections 1999 | Prestatyn: Central Ward | Denbighshire | The Labour Party | 331 | 13.9% | 4th | No |
| 4 May 1995 | Local Elections 1995 | Gorslas | Carmarthenshire | Conservative Party | 140 | 4.3% | 4th | No |
| 6 May 1993 | Local Elections 1993 | Bryncoch | Neath Port Talbot | Conservative Party | 172 | 8.4% | 3rd | No |
| 6 May 1993 | Local Elections 1993 | Pontllanfraith | Islwyn | Conservative Party | 146 | 5.6% | 3rd | No |
| 6 May 1993 | Local Elections 1993 | Halesworth | Waveney | The Labour Party | 1,194 | 48.4% | 1st | Yes |
| 3 May 1979 | Local Elections 1979 | Penmain | Islwyn | Conservative Party | 429 | 7.5% | 8th | No |
| 18 June 1970 | UK General Election 18 Jun 1970 | Montgomery | UK Parliamentary general election | The Labour Party | 5,335 | 20.1% | 3rd | No |
| 25 October 1951 | UK General Election 25 Oct 1951 | Aberdare | UK Parliamentary general election | The Labour Party | 34,783 | 78.5% | 1st | Yes |
| 23 February 1950 | UK General Election 23 Feb 1950 | Aberdare | UK Parliamentary general election | The Labour Party | 33,390 | 75.6% | 1st | Yes |
| 6 December 1923 | UK General Election 06 Dec 1923 | South Dorset | UK Parliamentary general election | The Labour Party | 3,602 | 17.5% | 3rd | No |