Plaid Cymru election results

This article lists Plaid Cymru's election results in UK parliamentary elections.

Summary of general election performance

Year	Number of Candidates	Total votes	Average votes per candidate	% UK vote	% Welsh vote	Change (percentage points)	Saved deposits^[1]	Number of MPs
1929	1	609	609	0.0	0.0	N/A	0	0
1931	2	2,050	1,025	0.0	0.2	+0.2	1	0
1935	1	2,534	2,534	0.0	0.3	+0.1	0	0
1945	7	16,017	2,288	0.0	1.2	+0.9	1	0
1950	7	17,580	2,288	0.1	1.2	0.0	1	0
1951	4	10,920	2,730	0.0	0.7	-0.5	0	0
1955	11	45,119	4,102	0.2	3.1	+2.4	4	0
1959	20	77,571	3,879	0.3	5.2	+2.1	6	0
1964	23	69,507	3,022	0.3	4.8	-0.2	2	0
1966	20	61,071	3,054	0.2	4.3	-0.5	2	0
1970	36	175,016	4,862	0.6	11.5	+7.2	11	0
1974 Feb	36	171,374	4,760	0.5	10.8	-0.7	10	2
1974 Oct	36	166,321	4,620	0.6	10.8	0.0	10	3
1979	36	132,544	3,682	0.4	8.2	-2.6	7	2
1983	38	125,309	3,298	0.4	7.8	-0.4	6	2
1987	38	123,599	3,253	0.4	7.3	-0.5	13	3
1992	38	156,796	4,126	0.5	9.0	+1.7	15	4
1997	40	161,030	4,026	0.5	9.9	+0.9	25	4
2001	40	195,893	4,897	0.7	14.3	+ 4.4	35	4
2005	40	174,838	4,371	0.6	12.6	-1.7	32	3
2010	40	165,394	4,135	0.6	11.3	-1.3	29	3
2015	40	181,704	4,543	0.6	12.1	+0.9	32	3

Elections results

1929 general election

Constituency	Candidate	Votes	%	Position
Caernarvonshire	Lewis Valentine	609	1.6	4

1931 general election

Constituency	Candidate	Votes	%	Position
Caernarvonshire	John Edward Daniel	1,136	3.0	4
University of Wales	Saunders Lewis	914	29.1	2

1935 general election

Constituency	Candidate	Votes	%	Position
Caernarvonshire	John Edward Daniel	2,534	6.9	3

By-elections 1935-1945

Election	Candidate	Votes	%	Position
University of Wales by-election, 1943	Saunders Lewis	1,330	22.5	2
Caernarvon Boroughs by-election, 1945	John Edward Daniel	6,844	24.8	2
Neath by-election, 1945	Wynne Samuel	6,290	16.2	2

1945 general election

Constituency	Candidate	Votes	%	Position
Caernarvon Boroughs	John Edward Daniel	1,560	4.5	4
Caernarvonshire	Ambrose Bebb	2,152	5.4	3
Merioneth	Gwynfor Evans	2,448	10.3	4
Neath	Wynne Samuel	3,659	7.3	3
Ogmore	Trefor Richard Morgan	2,379	5.6	3
Rhondda East	James Kitchener Davies	2,123	6.1	3
University of Wales	Gwenan Jones	1,696	24.5	2

By-elections 1945-1950

Election	Candidate	Votes	%	Position
Ogmore by-election, 1946	Trefor Richard Morgan	5,685	29.4	2
Aberdare by-election, 1946	Wynne Samuel	7,090	20.0	2

1950 general election

Constituency	Candidate	Votes	%	Position
Aberdare	Wynne Samuel	3,310	7.5	3
Caernarvon	John Edward Jones	4,882	13.1	4
Llanelly	David Eirwyn Morgan	2,134	3.8	4
Merioneth	Gwynfor Evans	2,754	11.0	4
Rhondda East	David James Davies	1,357	3.9	4
Rhondda East	James Kitchener Davies	2,183	6.6	3
Wrexham	Geraint Bowen	960	1.7	4

1951 general election

Constituency	Candidate	Votes	%	Position
Aberdare	Wynne Samuel	2,691	6.1	3
Llanelly	David Eirwyn Morgan	3,765	6.9	3
Rhondda West	James Kitchener Davies	2,467	7.7	3
Wrexham	Dan Thomas	1,997	3.6	3

By-elections 1951-1955

Election	Candidate	Votes	%	Position
Wrexham by-election, 1955	Elystan Morgan	4,572	11.3	3

1955 general election

Constituency	Candidate	Votes	%	Position
Aberdare	Trefor Beasley	3,703	9.4	3
Abertillery	Trefor Richard Morgan	1,259	4.1	3
Anglesey	J. Rowland Jones	2,183	7.5	3
Caernarvon	Robert E. Jones	5,815	16.5	3
Carmarthen	Jennie Eirian Davies	3,835	7.8	3
Conway	Ioan Bowen Rees	3,019	7.8	3
Gower	Chris Rees	4,101	10.6	3
Llanelly	David Eirwyn Morgan	6,398	12.5	3
Merioneth	Gwynfor Evans	5,243	22.2	3
Rhondda East	Noel Williams	2,776	8.8	4
Rhondda West	Glyn James	4,424	15.3	2
Wrexham	Elystan Morgan	5,139	10.4	3

By-elections 1955-1959

Election	Candidate	Votes	%	Position
Newport by-election, 1956	Emrys Roberts	1,978	3.8	3
Carmarthen by-election, 1957	Jennie Eirian Davies	5,741	11.5	3
Pontypool by-election, 1958	Benjamin Morgan	2,927	10.0	3

1959 general election

Constituency	Candidate	Votes	%	Position
Aberavon	Iixtyd Lewis	3,066	6.6	3
Aberdare	Ken Thomas	3,367	8.2	3
Anglesey	R. Tudur Jones	4,121	14.6	3
Caernarvon	Dafydd Orwig Jones	7,293	21.2	3
Caerphilly	John Howell	3,420	8.8	3
Cardiff North	Emrys Roberts	2,553	5.1	3
Cardigan	Gareth Evans	3,880	12.8	3
Carmarthen	Hywel Heulyn Roberts	2,545	5.2	3
Conway	Ioan Bowen Rees	2,852	7.6	4
Denbigh	Dafydd Alun Jones	3,077	7.2	4
Gower	J. Gwyn Griffiths	3,744	9.1	3
Llanelly	David Eirwyn Morgan	7,176	13.8	3
Merioneth	Gwynfor Evans	5,127	22.9	3
Pembroke	Waldo Williams	2,253	4.3	3
Pontypool	Benjamin Morgan	2,519	6.6	3
Rhondda East	Noel Williams	2,776	8.8	4
Rhondda West	Glyn James	4,978	17.0	2
Swansea East	Chris Rees	4,651	10.5	3
West Flintshire	Nefyl Williams	1,594	4.1	4
Wrexham	Elystan Morgan	6,579	12.2	3

By-elections 1959-1964

Election	Candidate	Votes	%	Position
Ebbw Vale by-election, 1960	Emrys Roberts	2,091	7.0	4
Montgomeryshire by-election, 1962	Islwyn Ffowc Elis	1,594	6.2	4
Swansea East by-election, 1963	Chris Rees	1,620	5.2	4

1964 general election

Constituency	Candidate	Votes	%	Position
Aberavon	Glyn John	2,118	4.6	3
Aberdare	Dewi Thomas	2,723	7.2	3
Anglesey	R. Tudur Jones	1,817	6.5	4
Brecon and Radnor	Trefor Richard Morgan	2,165	5.2	3
Caernarvon	Robert E. Jones	6,998	21.4	3
Caerphilly	Phil Williams	3,956	11.0	3
Cardiff North	Emrys Roberts	1,058	2.2	4
Cardigan	Gareth Evans	3,262	10.9	4
Carmarthen	Gwynfor Evans	5,495	11.7	3
Conway	Gwilym Hughes	3,058	8.3	3
Denbigh	Dafydd Alun Jones	3,444	7.9	4
Gower	J. Gwyn Griffiths	2,562	6.5	3
Llanelly	Pennar Davies	3,469	7.0	4
Merioneth	Elystan Morgan	3,697	16.9	3
Merthyr Tydfil	Ioan Bowen Rees	2,878	9.3	3
Montgomeryshire	Islwyn Ffowc Elis	2,167	8.5	4
Ogmore	Margaret Tucker	2,470	5.3	3
Pembroke	Dyfrig Thomas	1,717	3.4	4
Pontypool	Benjamin Morgan	2,519	6.6	3
Rhondda East	Glyn James	2,361	8.2	4
Rhondda West	Henry V. Davies	2,668	10.2	3
Swansea East	Chris Rees	3,556	8.4	3
West Flintshire	Nefyl Williams	1,195	3.0	4
Wrexham	John R. Thomas	4,673	8.9	3

By-elections 1964-1966

Election	Candidate	Votes	%	Position
Abertillery by-election, 1965	Edward Merriman	1,551	6.7	3

1966 general election

Constituency	Candidate	Votes	%	Position
Aberdare	J. Eaton Williams	3,073	8.6	3
Anglesey	John Wynn Meredith	2,596	9.6	3
Brecon and Radnor	Trefor Richard Morgan	2,410	6.1	3
Caernarvon	Humphrey Roberts	6,834	21.7	3
Caerphilly	John D. Howell	3,949	11.1	3
Cardiganshire	Edward Millward	2,469	8.1	4
Carmarthen	Gwynfor Evans	7,416	16.1	3
Conway	Robert E. Jones	2,552	6.7	3
Denbigh	Meredith Edwards	2,695	6.1	4
East Flintshire	Gwilym Hughes	902	1.9	4
Llanelli	Pennar Davies	5,132	10.9	3
Merioneth	Ieuan Lewis Jenkins	2,490	11.4	3
Merthyr Tydfil	Meic Stephens	3,361	11.5	3
Montgomeryshire	Trefor Edwards	1,841	7.4	4
Pembroke	Jack Sheppard	2,460	5.0	4
Rhondda East	Glyn James	2,088	7.5	3
Rhondda West	Henry Victor Davies	2,172	8.7	2
Swansea East	Chris Rees	2,749	6.8	3
West Flintshire	D. Alun Lloyd	1,585	3.8	4
Wrexham	John R. Thomas	2,297	4.5	4

By-elections 1966-1970

Election	Candidate	Votes	%	Position
Carmarthen by-election, 1966	Gwynfor Evans	16,179	39.0	1
Rhondda West by-election, 1967	Henry V. Davies	10,067	39.9	2
Caerphilly by-election, 1968	Phil Williams	14,274	40.4	2

1970 general election

Constituency	Candidate	Votes	%	Position
Aberavon	George Farmer	3,912	8.4	3
Aberdare	Gareth Morgan Jones	11,431	30.0	2
Abertillery	David B. Harries	1,751	6.2	3
Anglesey	John Lasarus Williams	7,140	22.1	3
Barry	Ogwen Williams	4,200	7.1	3
Bedwellty	Charles Davey	3,780	10.0	3
Brecon and Radnor	George Jenkins	2,349	5.4	3
Caernarfon	Robyn Lewis	11,331	33.4	2
Caerphilly	Phil Williams	11,505	28.5	2
Cardiff North	Morgan Edwards	1,927	4.1	4
Cardiff South East	Richard Davies	2,585	5.1	3
Cardiff West	D. J. Hughes	4,378	10.1	3
Cardiganshire	Hywel ap Robert	6,498	19.7	3
Carmarthen	Gwynfor Evans	14,812	30.1	2
Conway	Dafydd Elis-Thomas	4,311	10.8	3
Denbigh	E. Gwynn Matthews	5,254	11.0	4
East Flintshire	Gwilym Hughes	2,332	4.4	4
Ebbw Vale	Derek Baskerville	1,805	6.0	4
Gower	Clifford Davies	5,869	14.0	3
Llanelli	Carwyn James	8,387	16.8	2
Merionethshire	Dafydd Wigley	5,425	24.3	2
Merthyr Tydfil	Chris Rees	3,076	9.6	4
Monmouth	Stuart Neale	1,501	2.5	4
Montgomeryshire	Edward Millward	3,145	11.8	4
Neath	Glyn John	4,012	10.1	3
Newport	Bob Vickery	1,997	3.7	3
Ogmore	Ted Merriman	5,828	11.7	3
Pembroke	Wynne Samuel	3,681	6.7	4
Pontypool	Harri Webb	2,053	5.3	3
Pontypridd	E. Jones	5,059	10.4	4
Rhondda East	Glyn James	6,931	24.3	2
Rhondda West	Henry Victor Davies	3,528	14.1	2
Swansea East	Roderick Evans	4,188	10.2	3
Swansea West	Guto ap Gwent	3,033	6.2	3
West Flintshire	Ogwen Jones	3,108	6.9	4
Wrexham	Cyril Golding	2,894	5.3	4

By-elections 1970-1974

Election	Candidate	Votes	%	Position
Merthyr Tydfil by-election, 1972	Emrys Roberts	11,852	37.0	2

February 1974 general election

Constituency	Candidate	Votes	%	Position
Aberavon	D. G. Foster	5,898	12.2	3
Aberdare	Glyn Owen	11,973	29.9	2
Abertillery	A. Richards	3,119	10.9	2
Anglesey	Dafydd Iwan	7,610	21.7	3
Barry	Valerie Wynne-Williams	1,924	3.4	4
Bedwellty	A. Moore	3,048	7.7	4
Brecon and Radnor	Dafydd Noel Gittins	2,099	4.7	4
Caernarfon	Dafydd Wigley	14,103	40.5	1
Caerphilly	Phil Williams	11,956	27.5	2
Cardiff North	P. Richards	1,586	4.6	4
Cardiff North West	Colin Palfrey	1,227	3.4	4
Cardiff South East	Keith Bush	1,254	3.0	5
Cardiff West	Dafydd Hughes	2,093	5.5	4
Cardiganshire	C. Davies	4,754	13.3	4
Carmarthen	Gwynfor Evans	17,162	34.3	2
Conway	M. Farmer	4,203	10.1	4
Denbigh	E. G. Matthews	4,103	8.1	4
East Flintshire	Neil Taylor	1,135	2.0	4
Ebbw Vale	J. D. Rogers	1,767	5.9	4
Gower	J. N. Harris	3,741	8.3	4
Llanelli	R. Williams	6,020	12.0	4
Merioneth	Dafydd Elis-Thomas	7,823	34.6	1
Merthyr Tydfil	Emrys Roberts	7,336	22.9	2
Monmouth	Ted Spanswick	930	1.5	4
Montgomeryshire	A. Jones	2,274	8.3	4
Neath	Huw Evans	8,758	21.5	2
Newport	P. Cox	936	1.6	4
Ogmore	Ted Merriman	5,139	9.6	4
Pembroke	R. V. Davies	2,820	4.8	4
Pontypool	Roger Tanner	1,308	3.1	4
Pontypridd	Richard Anthony Kemp	4,612	8.6	4
Rhondda	Glyn James	6,739	12.9	2
Swansea East	John Graham Ball	5,135	11.9	3
Swansea West	Derrick Hearne	1,859	3.6	4
West Flintshire	Gwilym Hughes	2,296	4.4	4
Wrexham	H. W. Roberts	2,624	4.5	4

October 1974 general election

Constituency	Candidate	Votes	%	Position
Aberavon	G. Thomas	4,032	8.5	4
Aberdare	Glyn Owen	8,133	21.3	2
Abertillery	W. A. Richards	2,480	9.0	2
Anglesey	Dafydd Iwan	6,410	19.1	3
Barry	Valerie Wynne-Williams	1,793	3.3	4
Bedwellty	David Mogford	3,086	8.0	4
Brecon and Radnor	Dafydd Noel Gittins	2,300	5.2	4
Caernarfon	Dafydd Wigley	14,624	42.6	1
Caerphilly	Phil Williams	10,452	24.5	2
Cardiff North	P. Richards	1,464	4.6	4
Cardiff North West	Colin Palfrey	1,278	3.7	4
Cardiff South East	Keith Bush	983	2.4	4
Cardiff West	Dafydd Hughes	2,008	5.5	4
Cardiganshire	C. Davies	4,583	13.2	4
Carmarthen	Gwynfor Evans	23,325	45.1	1
Conway	M. Farmer	4,668	11.8	4
Denbigh	Ieuan Wyn Jones	5,754	11.9	4
East Flintshire	F. Evans	1,779	3.2	4
Ebbw Vale	G. Robert	2,101	7.3	4
Gower	M. Powell	4,369	10.0	4
Llanelli	R. Williams	6,797	13.7	3
Merioneth	Dafydd Elis-Thomas	9,543	42.5	1
Merthyr Tydfil	Emrys Roberts	4,455	14.8	2
Monmouth	T. Brimmacombe	839	1.4	4
Montgomeryshire	A. P. Jones	2,440	9.3	4
Neath	Huw Evans	7,305	17.9	2
Newport	G. Lee	1,216	2.1	4
Ogmore	D. I. Jones	4,290	8.4	4
Pembroke	R. V. Davies	2,580	4.5	4
Pontypool	Roger Tanner	2,223	5.6	4
Pontypridd	Richard Anthony Kemp	3,917	7.6	4
Rhondda	D. Morgan	4,173	8.3	2
Swansea East	John Graham Ball	3,978	9.5	4
Swansea West	Guto ap Gwent	1,778	3.6	4
West Flintshire	Neil Taylor	2,306	4.8	4
Wrexham	H. W. Roberts	2,859	5.1	4

1979 general election

Constituency	Candidate	Votes	%	Position
Aberavon	G. Thomas	1,954	3.8	4
Aberdare	Phil Richards	3,652	9.8	3
Abertillery	David Harries	2,248	7.9	3
Anglesey	John Lasarus Williams	7,863	20.3	3
Barry	John Dixon	1,281	2.1	4
Bedwellty	T. Richards	2,648	6.6	3
Brecon and Radnor	J. Power	1,031	2.2	4
Caernarfon	Dafydd Wigley	17,420	49.7	1
Caerphilly	Phil Williams	6,931	14.9	3
Cardiff North	Owen John Thomas	1,081	3.0	4
Cardiff North West	Colin Palfrey	743	2.1	4
Cardiff South East	Eric Roberts	628	1.6	3
Cardiff West	A. Ogwen	3,272	10.4	2
Cardiganshire	Dafydd Hughes	5,382	14.5	4
Carmarthen	Gwynfor Evans	16,689	32.0	2
Conway	Emyr Price	3,497	8.6	4
Denbigh	Ieuan Wyn Jones	4,915	9.3	4
East Flintshire	John Rogers	1,198	2.0	4
Ebbw Vale	G. ap Roberts	1,884	6.5	4
Gower	Eifion Thomas	3,357	7.2	4
Llanelli	Hywel Roberts	3,793	7.4	4
Merioneth	Dafydd Elis-Thomas	9,275	40.8	1
Merthyr Tydfil	Eurfyl ap Gwilym	2,962	9.4	3
Monmouth	G. Williams	641	1.0	4
Montgomeryshire	Carl Iwan Clowes	2,440	9.3	4
Neath	Aled Gwyn	6,430	15.3	3
Newport	Bob Vickery	473	0.8	4
Ogmore	D. I. Jones	2,450	4.4	4
Pembroke	Ron Dawe	1,573	2.5	4
Pontypool	Bill Hyde	1,169	2.6	4
Pontypridd	Elfed Roberts	2,200	3.8	4
Rhondda	Glyn James	4,226	8.4	3
Swansea East	John Graham Ball	2,732	6.0	4
Swansea West	Guto ap Gwent	1,012	1.9	4
West Flintshire	B. M. Edwards	1,720	3.2	4
Wrexham	H. W. Roberts	1,740	2.8	4

By-elections 1979-1983

Election	Candidate	Votes	%	Position
Gower by-election, 1982	Ieuan Owen	3,431	8.7	4

1983 general election

Constituency	Candidate	Votes	%	Position
Aberavon	Glenn Phillips	1,859	4.6	4
Alyn and Deeside	Alan Shore	413	0.9	4
Blaenau Gwent	Stephen Morgan	1,624	3.8	4
Brecon and Radnor	Sian Rosmari Meredudd	640	1.7	4
Bridgend	Keith Bush	1,312	3.2	4
Caernarfon	Dafydd Wigley	18,308	52.7	1
Caerphilly	Lindsay Whittle	6,414	13.6	4
Cardiff Central	Andrew Paul Morgan	704	1.8	4
Cardiff North	Dafydd Huws	974	2.4	4
Cardiff South and Penarth	Sian Anghared Edwards	673	1.6	4
Cardiff West	Meurig Parri	848	2.1	4
Carmarthen	Gwynfor Evans	14,099	27.1	3
Ceredigion and Pembroke North	Cynog Dafis	6,072	12.9	4
Clwyd North West	Manon Rhys	1,669	3.7	4
Clwyd South West	Toni Schiavone	3,684	8.6	4
Conwy	Dafydd Iwan	4,105	10.4	4
Cynon Valley	Pauline Jarman	3,421	9.3	4
Delyn	Haydn Huws	1,558	3.2	4
Gower	N. Williams	1,444	3.2	4
Islwyn	Aneurin Richards	1,574	4.0	4
Llanelli	Hywel Teifi Edwards	5,880	12.2	4
Meirionnydd Nant Conwy	Dafydd Elis-Thomas	9,709	39.2	1
Merthyr Tydfil and Rhymney	Gerald Howells	2,058	5.8	4
Monmouth	G. Williams	493	1.1	4
Montgomeryshire	Carl Iwan Clowes	1,585	5.3	4
Neath	Ieuan Owen	3,046	7.2	4
Newport East	David Thomas	697	1.7	4
Newport West	Denis Watkins	477	1.1	4
Ogmore	Ted Merriman	3,124	7.9	4
Pembroke	Osi Rhys Osmond	1,073	2.0	4
Pontypridd	Janet Marion Davies	2,065	4.7	4
Rhondda	Geraint Rhys Davies	4,845	10.2	3
Swansea East	C. Reid	1,531	3.7	4
Swansea West	Meirion Pennar	795	1.9	4
Torfaen	Phyllis Cox	896	2.1	4
Vale of Glamorgan	Andrew John Dixon	1,068	2.3	4
Wrexham	John Richard Thomas	1,239	2.6	4
Ynys Môn	Ieuan Wyn Jones	13,333	33.3	2

By-elections 1983-1987

Election	Candidate	Votes	%	Position
Cynon Valley by-election, 1984	Clayton Jones	3,619	11.0	3
Brecon and Radnor by-election, 1985	Janet Davies	435	1.1	4

1987 general election

Constituency	Candidate	Votes	%	Position
Aberavon	Anne Louisa Howells	1,124	2.8	4
Alyn and Deeside	John Dudley Rogers	478	1.0	4
Blaenau Gwent	Stephen Morgan	1,621	3.8	4
Brecon and Radnor	John Hamilton Davies	535	1.3	4
Bridgend	Laura McAllister	1,065	2.3	4
Caernarfon	Dafydd Wigley	20,338	57.1	1
Caerphilly	Lindsay Whittle	3,955	8.1	4
Cardiff Central	Siân Mair Caiach	535	1.3	4
Cardiff North	Eluned Mary Bush	692	1.6	4
Cardiff South and Penarth	Sian Anghared Edwards	599	1.3	4
Cardiff West	Peter John Keelan	736	1.7	4
Carmarthen	Hywel Teifi Edwards	12,457	23.0	3
Ceredigion and Pembroke North	Cynog Dafis	7,848	16.3	4
Clwyd North West	Robert Karl Davies	1,966	4.0	4
Clwyd South West	Eifion Lloyd Jones	3,987	8.4	4
Conwy	Rhodri Davies	3,177	7.8	4
Cynon Valley	Dorothy Louise Richards	2,549	6.7	4
Delyn	David John Owen	1,329	2.5	4
Gower	Jonathan Gwyn Mendus Edwards	1,341	2.8	4
Islwyn	Aneurin Richards	1,932	4.8	4
Llanelli	Adam Price	5,088	10.2	4
Meirionnydd Nant Conwy	Dafydd Elis-Thomas	10,392	40.0	1
Merthyr Tydfil and Rhymney	Janet Marion Davies	2,085	4.7	4
Monmouth	Sian Rosmari Meredudd	363	0.8	4
Montgomeryshire	Carl Iwan Clowes	1,412	4.5	4
Neath	Huw John	2,792	6.4	4
Newport East	Gareth Butler	458	1.1	4
Newport West	Digby John Bevan	377	0.8	4
Ogmore	John Griffiths Jones	1,791	4.4	4
Pembroke	Osi Rhys Osmond	1,119	2.0	4
Pontypridd	Delme Bowen	2,498	5.3	4
Rhondda	Geraint Rhys Davies	4,261	8.9	2
Swansea East	C. Reid	1,145	2.7	4
Swansea West	Nigel Williams	902	2.0	4
Torfaen	Jill Evans	577	1.3	4
Vale of Glamorgan	Penri Gwyn Williams	946	1.8	4
Wrexham	Dennis Ronald Watkins	539	1.1	4
Ynys Môn	Ieuan Wyn Jones	18,580	43.2	1

By-elections 1987-1992

Election	Candidate	Votes	%	Position
Pontypridd by-election, 1989	Syd Morgan	9,775	25.3	2
Vale of Glamorgan by-election, 1989	Andrew John Dixon	1,672	3.5	4
Neath by-election, 1991	Dewi Evans	8,132	23.3	2
Monmouth by-election, 1991	Melvin John Witherden	277	0.6	5

Witherden was a joint candidate with the Green Party of England and Wales.

1992 general election

Constituency	Candidate	Votes	%	Position
Aberavon	David Saunders	1,919	4.8	4
Alyn and Deeside	John D. Rogers	551	1.1	4
Blaenau Gwent	Alun Davies	2,099	4.8	4
Brecon and Radnor	Sian Meredudd	418	0.9	4
Bridgend	Alun Lloyd Jones	1,301	2.8	4
Caernarfon	Dafydd Wigley	21,439	59.0	1
Caerphilly	Lindsay Whittle	4,821	9.7	3
Cardiff Central	Huw Marshall	748	1.7	4
Cardiff North	Eluned Mary Bush	916	1.9	4
Cardiff South and Penarth	Barbara Anglezarke	776	1.6	4
Cardiff West	Penni Bestic	1,177	2.6	4
Carmarthen	Rhodri Glyn Thomas	17,957	31.5	2
Ceredigion and Pembroke North	Cynog Dafis	16,020	31.3	1
Clwyd North West	Neil H. Taylor	1,888	3.6	4
Clwyd South West	Eifion Lloyd Jones	4,835	9.8	4
Conwy	Rhodri Davies	3,108	7.4	4
Cynon Valley	Geraint Benney	4,186	11.0	3
Delyn	Ashley J. Drake	1,414	2.6	4
Gower	Adam Price	1,658	2.8	4
Islwyn	Helen Mary Jones	1,636	3.9	4
Llanelli	Marc Phillips	7,878	15.6	3
Meirionnydd Nant Conwy	Elfyn Llwyd	11,608	44.0	1
Merthyr Tydfil and Rhymney	Alun Cox	2,704	6.1	4
Monmouth	Melvin Witherden	431	0.9	4
Montgomeryshire	Hugh Parsons	1,581	4.8	4
Neath	Dewi Evans	5,145	11.3	3
Newport East	Stephen Ainley	716	1.7	4
Newport West	Peter John Keelan	653	1.4	4
Ogmore	Laura McAllister	2,667	6.3	4
Pembroke	Conrad Bryant	1,627	2.7	4
Pontypridd	Delme Bowen	4,448	9.1	3
Rhondda	Geraint Rhys Davies	5,427	11.8	2
Swansea East	Eleanor Bonner-Evans	1,607	3.6	4
Swansea West	David Lloyd	1,668	3.8	4
Torfaen	John Cox	1,210	2.6	4
Vale of Glamorgan	David Haswell	1,160	2.1	4
Wrexham	Gareth Wheatley	1,415	2.8	4
Ynys Môn	Ieuan Wyn Jones	15,984	37.1	1

By-elections 1992-1997

Election	Candidate	Votes	%	Position
Islwyn by-election, 1995	Jocelyn Davies	2,933	12.7	2

1997 general election

Constituency	Candidate	Votes	%	Position
Aberavon	Philip Cockwell	2,088	5.8	4
Alyn and Deeside	Siw Hills	738	1.8	5
Blaenau Gwent	Jim Criddle	2,072	5.2	4
Brecon and Radnorshire	Steven Cornelius	622	1.5	5
Bridgend	Dennis Watkins	1,649	3.8	5
Caerphilly	Lindsay Whittle	4,383	9.7	3
Caernarfon	Dafydd Wigley	17,616	51.0	1
Cardiff Central	Wayne Vernon	1,504	3.6	5
Cardiff North	Colin Palfrey	1,201	2.5	4
Cardiff South and Penarth	David Haswell	1,356	3.2	5
Cardiff West	Gwenillian Carr	1,949	4.8	4
Carmarthen East and Dinefwr	Rhodri Glyn Thomas	14,457	34.6	2
Carmarthen West and South Pembrokeshire	Roy Llewellyn	5,402	12.7	3
Ceredigion	Simon Thomas	16,728	41.6	1
Clwyd South	Gareth Williams	2,500	6.3	4
Clwyd West	Eryl Williams	5,421	13.5	3
Conwy	Rhodri Vaughan Davies	2,844	6.8	4
Cynon Valley	Alun Davies	3,552	10.6	2
Delyn	Ashley J. Drake	1,558	3.8	4
Gower	D. Elwyn Williams	2,226	5.1	4
Islwyn	Darren Jones	2,272	6.2	4
Llanelli	Marc Phillips	7,812	19.0	2
Meirionnydd Nant Conwy	Elfyn Llwyd	12,465	50.7	1
Merthyr Tydfil	Alun G. Cox	2,344	6.0	4
Monmouth	Alan Cotton	516	1.1	5
Montgomeryshire	Helen Mary Jones	1,608	5.0	4
Neath	Trefor Jones	3,344	8.1	3
Newport East	Christopher Holland	721	1.9	6
Newport West	Huw Jackson	648	1.6	5
Ogmore	John Rogers	2,679	7.0	4
Pontypridd	Owain Llewelyn	2,977	6.5	4
Preseli Pembrokeshire	Alun Lloyd Jones	2,683	6.3	4
Rhondda	Leanne Wood	5,450	13.4	2
Swansea East	Michelle Pooley	1,308	3.4	4
Swansea West	Dai Lloyd	2,675	6.6	4
Torfaen	Robert W. Gough	1,042	2.4	5
Vale of Clwyd	Gwyneth Kensler	2,301	5.9	4
Vale of Glamorgan	Melanie Corp	1,393	2.6	4
Wrexham	Kevin Plant	1,170	3.2	5
Ynys Môn	Ieuan Wyn Jones	15,756	39.5	1

By-elections 1997-2001

Election	Candidate	Votes	%	Position
Ceredigion by-election, 2000	Simon Thomas	10,716	42.8	1

2001 general election

Constituency	Candidate	Votes	%	Position
Aberavon	Lisa Turnbull	2,955	9.8	2
Alyn and Deeside	Richard Coombs	1,182	3.3	4
Blaenau Gwent	Adam John Rykala	3,542	11.2	2
Brecon and Radnorshire	Brynach Parri	1,301	3.5	4
Bridgend	Monica Emma Mahoney	2,653	7.2	4
Caerphilly	Lindsay Whittle	8,172	21.0	2
Caernarfon	Hywel Williams	12,894	44.4	1
Cardiff Central	Richard Rhys Grigg	1,680	4.8	4
Cardiff North	Sion Tomos Jobbins	2,471	5.7	4
Cardiff South and Penarth	Lila Eilis Maire Haines	1,983	5.5	4
Cardiff West	Delme Bowen	3,296	9.7	4
Carmarthen East and Dinefwr	Adam Robert Price	16,130	42.4	1
Carmarthen West and South Pembrokeshire	Llyr Huws Gruffydd	6,893	18.7	3
Ceredigion	Simon Thomas	13,241	38.3	1
Clwyd South	Dyfed Wyn Edwards	3,982	11.9	3
Clwyd West	Huw Elfed Williams	4,453	12.9	3
Conwy	Ann Owen	5,665	16.5	4
Cynon Valley	Steven J. Cornelius	4,687	17.4	2
Delyn	Paul John Rowlinson	2,262	6.5	4
Gower	Siân Mair Caiach	3,865	10.3	4
Islwyn	Leigh Thomas	3,767	11.9	3
Llanelli	Dyfan Rhys Jones	11,183	30.9	2
Meirionnydd Nant Conwy	Elfyn Llwyd	10,459	49.6	1
Merthyr Tydfil	Robert Hughes	4,651	14.7	2
Monmouth	Marc Hubbard	1,068	2.4	4
Montgomeryshire	David Senior	1,969	6.8	4
Neath	Alun Llewelyn	6,437	18.4	2
Newport East	Madoc Batcup	1,519	4.9	4
Newport West	Anthony Salkeld	2,510	7.2	4
Ogmore	Angela Pulman	4,259	14.0	2
Pontypridd	Bleddyn Hancock	5,279	13.8	2
Preseli Pembrokeshire	Rhys Sinnett	4,658	12.7	3
Rhondda	Leanne Wood	7,183	21.1	2
Swansea East	John Ball	3,464	11.5	4
Swansea West	Ian Titherington	3,404	10.6	4
Torfaen	Stephen Paul Smith	2,720	7.7	4
Vale of Clwyd	John Williams	2,300	7.1	4
Vale of Glamorgan	Chris Franks	2,867	6.3	4
Wrexham	Malcolm William Evans	1,783	5.9	4
Ynys Môn	Eilian Williams	11,106	32.6	2

By-elections 2001-2005

Election	Candidate	Votes	%	Position
Ogmore by-election, 2002	Bleddyn Hancock	3,827	20.8	2

2005 general election

Constituency	Candidate	Votes	%	Position
Aberavon	Philip Evans	3,545	11.8	3
Alyn and Deeside	Richard Coombs	1,320	3.7	4
Blaenau Gwent	John Price	843	2.4	4
Brecon and Radnorshire	Mabon ap Gwynfor	1,404	3.7	4
Bridgend	Gareth Clubb	2,527	6.7	4
Caerphilly	Lindsay Whittle	6,831	17.4	2
Caernarfon	Hywel Williams	12,747	45.5	1
Cardiff Central	Richard Rhys Grigg	1,271	3.5	4
Cardiff North	John Rowlands	1,936	4.3	4
Cardiff South and Penarth	Jason Toby	2,023	5.5	4
Cardiff West	Neil McEvoy	4,316	12.5	4
Carmarthen East and Dinefwr	Adam Robert Price	17,561	45.9	1
Carmarthen West and South Pembrokeshire	John Dixon	5,582	14.7	3
Ceredigion	Simon Thomas	12,911	35.9	2
Clwyd South	Mark Strong	3,111	9.4	4
Clwyd West	Eilian Williams	3,874	10.9	4
Conwy	Paul Rowlinson	3,730	11.1	4
Cynon Valley	Geraint Benney	3,815	14.3	2
Delyn	Phil Thomas	2,524	7.4	4
Gower	Siân Mair Caiach	3,089	7.8	4
Islwyn	Jim Criddle	3,947	12.8	2
Llanelli	Neil Baker	9,358	26.5	2
Meirionnydd Nant Conwy	Elfyn Llwyd	10,597	51.3	1
Merthyr Tydfil	Noel Turner	2,972	9.9	4
Monmouth	Jonathan Clark	993	2.2	4
Montgomeryshire	Ellen ap Gwynn	2,078	6.9	4
Neath	Geraint Owen	6,125	17.1	2
Newport East	Mohammad Asghar	1,221	3.8	4
Newport West	Anthony Salkeld	1,278	3.6	4
Ogmore	John Williams	3,148	10.4	4
Pontypridd	Julie Richards	4,420	11.2	4
Preseli Pembrokeshire	Matt Mathias	4,752	12.3	4
Rhondda	Percy Jones	4,956	15.9	2
Swansea East	Carolyn Shan Couch	2,129	6.9	4
Swansea West	Harri Roberts	2,150	6.5	4
Torfaen	Aneurin Preece	2,242	6.2	4
Vale of Clwyd	Mark Jones	2,309	7.1	4
Vale of Glamorgan	Barry Shaw	2,423	5.1	4
Wrexham	Sion Owen	1,744	5.7	4
Ynys Môn	Eurig Wyn	11,036	31.1	2

By-elections 2005-2010

Election	Candidate	Votes	%	Position
Blaenau Gwent by-election, 2006	Steffan Lewis	1,755	6.5	3

2010 general election

Constituency	Candidate	Votes	%	Position
Aberavon	Paul Nicholls-Jones	2,198	7.1	4
Aberconwy	Phil Edwards	5,341	17.8	4
Alyn and Deeside	Maurice Jones	1,549	3.9	4
Arfon	Hywel Williams	9,383	36.0	1
Blaenau Gwent	Rhodri Davies	1,333	4.1	5
Brecon and Radnorshire	Janet Davies	989	2.5	4
Bridgend	Nicholas Thomas	2,269	5.9	4
Caerphilly	Lindsay Whittle	6,460	16.7	3
Cardiff Central	Chris Williams	1,246	3.4	4
Cardiff North	Llewelyn Rhys	1,588	3.3	4
Cardiff South and Penarth	Farida Aslam	1,851	4.2	4
Cardiff West	Mohammad Sarul Islam	2,868	7.0	4
Carmarthen East and Dinefwr	Jonathan Edwards	13,546	35.6	1
Carmarthen West and South Pembrokeshire	John Dixon	4,232	10.4	4
Ceredigion	Penri James	10,815	28.3	2
Clwyd South	Janet Ryder	3,009	8.7	4
Clwyd West	Llyr Huws Gruffydd	5,864	15.4	3
Cynon Valley	Dafydd Trystan Davies	6,064	20.3	2
Delyn	Peter Ryder	1,844	5.0	4
Dwyfor Meirionydd	Elfyn Llwyd	12,814	44.3	1
Gower	Darren Price	2,760	6.6	4
Islwyn	Steffan Lewis	4,518	13.0	3
Llanelli	Myfanwy Davies	11,215	29.9	2
Merthyr Tydfil	Glyndwr Jones	1,621	5.1	5
Monmouth	Jonathan Clark	1,273	2.7	4
Montgomeryshire	Heledd Fychan	2,802	8.3	3
Neath	Alun Llewelyn	7,397	19.9	2
Newport East	Fiona Cross	724	2.1	5
Newport West	Jeff Rees	1,122	2.8	6
Ogmore	Danny Clark	3,326	9.6	4
Pontypridd	Ioan Bellin	2,673	7.3	4
Preseli Pembrokeshire	Henry Jones-Davies	3,654	9.2	4
Rhondda	Geraint Davies	5,630	18.1	2
Swansea East	Dic Jones	2,181	6.7	4
Swansea West	Harri Roberts	1,437	4.0	4
Torfaen	Rhys ab Elis	2,005	5.3	4
Vale of Clwyd	Caryl Wyn-Jones	2,068	5.8	4
Vale of Glamorgan	Ian James Johnson	2,667	5.5	4
Wrexham	Arfon Jones	2,029	6.2	4
Ynys Môn	Dylan Rees	9,029	26.2	2

By-elections 2010-2015

Election	Candidate	Votes	%	Position
Cardiff South and Penarth by-election, 2012	Luke Nicholas	1,854	9.5	4

2015 general election

Constituency	Candidate	Votes	%	Position
Aberavon	Duncan Higgitt	3,663	11.6	4
Aberconwy	Dafydd Meurig	3,536	11.7	3
Alyn and Deeside	Jacqueline Ann Hurst	1,608	3.9	5
Arfon	Hywel Williams	11,790	43.9	1
Blaenau Gwent	Steffan Lewis	2,849	9.0	4
Brecon and Radnorshire	Freddy Greaves	1,767	4.4	5
Bridgend	James Christopher Radcliffe	2,784	7.1	4
Caerphilly	Beci Newton	5,895	14.6	4
Cardiff Central	Martin Pollard	1,925	5.0	6
Cardiff North	Elin Walker Jones	2,301	4.5	4
Cardiff South and Penarth	Ben Foday	3,433	7.4	4
Cardiff West	Neil McEvoy	6,096	13.9	3
Carmarthen East and Dinefwr	Jonathan Edwards	15,140	38.4	1
Carmarthen West and South Pembrokeshire	Elwyn Williams	4,201	10.4	4
Ceredigion	Mike Parker	10,347	27.7	2
Clwyd South	Mabon ap Gwynfor	3,620	10.3	4
Clwyd West	Marc Jones	4,651	12.2	4
Cynon Valley	Cerith Griffiths	5,126	16.8	2
Delyn	Paul Rowlinson	1,803	4.8	4
Dwyfor Meirionydd	Liz Saville-Roberts	11,811	40.9	1
Gower	Darren Thomas	3,051	7.1	4
Islwyn	Lyn Ackerman	3,794	10.7	4
Llanelli	Vaughan Williams	8,853	23.0	2
Merthyr Tydfil	Rhayna Pritchard	3,099	9.5	4
Monmouth	Jonathan Clark	1,875	3.9	5
Montgomeryshire	Ann Griffith	1,745	5.2	5
Neath	Daniel Thomas	6,722	18.1	2
Newport East	Tony Salkeld	1,231	3.5	5
Newport West	Simon Coopey	1,604	4.0	4
Ogmore	Tim Thomas	3,556	10.1	4
Pontypridd	Osian Lewis	4,348	11.5	5
Preseli Pembrokeshire	John Osmond	2,518	6.2	5
Rhondda	Shelley Rees-Owen	8,521	27.0	2
Swansea East	Dic Jones	3,498	10.4	4
Swansea West	Harri Roberts	2,266	6.4	5
Torfaen	Boydd Hackley-Green	2,169	5.7	4
Vale of Clwyd	Mair Rowlands	2,486	7.1	4
Vale of Glamorgan	Ian James Johnson	2,869	5.6	4
Wrexham	Carrie Harper	2,501	7.6	4
Ynys Môn	John Rowlands	10,642	30.5	2

By-elections 2015-present

Election	Candidate	Votes	%	Position
Ogmore by-election, 2016	Abi Thomas	3,683	15.7	3

2017 general election

Constituency	Candidate	Votes	%	Position
Aberavon	Andrew Bennison	2,761	8.3	3
Aberconwy	Wyn Elis Jones	3,170	9.9	3
Alyn and Deeside	Jacqueline Ann Hurst	1,171	2.6	3
Arfon	Hywel Williams	11,519	40.8	1
Blaenau Gwent	Nigel Copner	6,880	21.2	2
Brecon and Radnorshire	Kate Heneghan	1,299	3.1	4
Bridgend	Rhys Watkins	1,783	4.1	3
Caerphilly	Lindsay Whittle	5,962	14.4	3
Cardiff Central	Mark Hooper	999	2.5	4
Cardiff North	Steffan Webb	1,738	3.3	3
Cardiff South and Penarth	Ian Titherington	2,162	4.3	3
Cardiff West	Michael Deem	4,418	9.5	3
Carmarthen East and Dinefwr	Jonathan Edwards	16,127	39.3	1
Carmarthen West and South Pembrokeshire	Abi Thomas	3,933	9.3	3
Ceredigion	Ben Lake	11,623	29.2	1
Clwyd South	Christopher Allen	2,292	6.1	3
Clwyd West	Dilwyn Roberts	3,918	9.6	3
Cynon Valley	Liz Walters	4,376	13.8	3
Delyn	Paul Rowlinson	1,481	3.8	3
Dwyfor Meirionydd	Liz Saville-Roberts	13,687	45.1	1
Gower	Harri Roberts	1,669	3.7	3
Islwyn	Darren Jones	2,739	7.6	3
Llanelli	Mari Arthur	7,351	18.2	3
Merthyr Tydfil and Rhymney	Amy Kitcher	2,740	8.2	3
Monmouth	Carole Damon	1,338	2.7	4
Montgomeryshire	Aled Hughes	1,960	5.6	4
Neath	Daniel Williams	5,339	13.9	3
Newport East	Cameron Wixcey	881	2.4	5
Newport West	Morgan Bowler-Brown	1,077	2.5	4
Ogmore	Huw Marshall	2,796	7.5	3
Pontypridd	Fflur Elin	4,102	10.3	3
Preseli Pembrokeshire	Owain Llŷr Williams	2,711	6.4	3
Rhondda	Branwen Cennard	7,350	22.3	2
Swansea East	Steffan Phillips	1,689	4.8	3
Swansea West	Rhydian Fitter	1,529	4.1	3
Torfaen	Jeff Rees	2,059	5.4	3
Vale of Clwyd	David Wyatt	1,551	4.0	3
Vale of Glamorgan	Ian Johnson	2,295	4.3	3
Wrexham	Carrie Harper	1,753	5.0	3
Ynys Môn	Ieuan Wyn Jones	10,237	27.4	3

References

↑ Craig, F. W. S. (1968). British Parliamentary Election Statistics 1918-1968. Glasgow: Political Reference Publications. p. 46. ISBN 0900178000.

F. W. S. Craig, Chronology of British Parliamentary By-elections 1833-1987
F. W. S. Craig, British parliamentary election results 1918–1949 (3 ed.). Chichester: Parliamentary Research Services. ISBN 0-900178-06-X
F. W. S. Craig, British parliamentary election results 1950–1973 (2 ed.). Chichester: Parliamentary Research Services. ISBN 0-900178-07-8
F. W. S. Craig, British parliamentary election results, 1974–1983. Chichester: Parliamentary Research Services. ISBN 0-900178-23-X
C. Rallings & M. Thrasher, British Parliamentary Election Results 1983-1997, (Aldershot: Ashgate, 1999)
C. Rallings & M. Thrasher, Britain Votes 6, (Aldershot: Ashgate 1998)
Electoral Commission, Compiled by Colin Rallings & Michael Thrasher, Election 2001 - The Official Results, (London: Politicos, 2001)
Beti Jones, Etholiadau'r ganrif (in Welsh)

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[1] Craig, F. W. S. (1968). British Parliamentary Election Statistics 1918-1968. Glasgow: Political Reference Publications. p. 46. ISBN 0900178000.

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