Plaid Cymru election results

This article lists Plaid Cymru's election results in UK parliamentary, European parliamentary, and Welsh Assembly elections.

Summary of electoral performance

Westminster elections

YearConstituenciesVotes
Number of
candidates
Saved
deposits[1]
Number of
elected MPs
ChangeTotalAverage
per candidate
% UK
vote
% Welsh
vote
Change
(percentage points)
1929106096090.0%0.0%New
1931212,0501,0250.0%0.2% 0.2
1935102,5342,5340.0%0.3% 0.1
19457116,0172,2880.0%1.2% 0.9
19507117,5802,2880.1%1.2% 0.0
19514010,9202,7300.0%0.7% 0.5
195511445,1194,1020.2%3.1% 2.4
195920677,5713,8790.3%5.2% 2.1
196423269,5073,0220.3%4.8% 0.2
196620261,0713,0540.2%4.3% 0.5
19703611175,0164,8620.6%11.5% 7.2
1974 Feb36102 2171,3744,7600.5%10.8% 0.7
1974 Oct36103 1166,3214,6200.6%10.8%
19793672 1132,5443,6820.4%8.2% 2.6
19833862125,3093,2980.4%7.8% 0.4
198738133 1123,5993,2530.4%7.3% 0.5
199238154 1156,7964,1260.5%9.0% 1.7
199740254161,0304,0260.5%9.9% 0.9
200140354195,8934,8970.7%14.3% 4.4
200540323 1174,8384,3710.6%12.6% 1.7
201040293165,3944,1350.6%11.3% 1.3
201540323181,7044,5430.6%12.1% 0.9
201740244 1164,4664,1120.5%10.4% 1.7
201936274153,2654,2570.5%9.9% 0.5

Welsh Assembly elections

Date Constituency Region Total seats
Votes % +/- Seats +/- Votes % +/- Top-up seats +/- Total +/- %
1999290,57228.4%N/A
9 / 40
N/A312,04830.5%N/A
8 / 20
N/A
17 / 60
N/A28.3%
2003180,18521.2% 7.2
5 / 40
4167,65319.7% 10.8
7 / 20
1
12 / 60
520.0%
2007219,12121.4% 1.2
7 / 40
2204,75721.0% 1.3
8 / 20
1
15 / 60
325.0%
2011182,90719.3% 3.1
5 / 40
2169,79917.9% 3.1
6 / 20
2
11 / 60
418.3%
2016209,37620.5% 1.3
6 / 40
1211,54820.8% 2.9
6 / 20
12 / 60
120.0%

European Parliament elections

Date Votes Welsh seats
# % +/- # +/- %
197983,39911.7%N/A
0 / 4
N/A0%
1984103,03112.2% 0.5
0 / 4
0%
1989115,06212.9% 0.7
0 / 4
0%
1994162,47817.1% 4.2
0 / 5
0%
1999185,23529.6% 12.5
2 / 5
240%
2004159,88817.4% 12.2
1 / 4
125%
2009126,70218.5% 1.1
1 / 4
25%
2014111,86415.3% 3.3
1 / 4
25%
2019163,92819.6% 4.3
1 / 4
25%

Elections results

1929 general election

ConstituencyCandidateVotes%Position
CaernarvonshireLewis Valentine6091.64

1931 general election

ConstituencyCandidateVotes%Position
CaernarvonshireJohn Edward Daniel1,1363.04
University of WalesSaunders Lewis91429.12

1935 general election

ConstituencyCandidateVotes%Position
CaernarvonshireJohn Edward Daniel2,5346.93

By-elections 1935-1945

ElectionCandidateVotes%Position
1943 University of Wales by-electionSaunders Lewis1,33022.52
1945 Caernarvon Boroughs by-electionJohn Edward Daniel6,84424.82
1945 Neath by-electionWynne Samuel6,29016.22

1945 general election

ConstituencyCandidateVotes%Position
Caernarvon BoroughsJohn Edward Daniel1,5604.54
CaernarvonshireAmbrose Bebb2,1525.43
MerionethGwynfor Evans2,44810.34
NeathWynne Samuel3,6597.33
OgmoreTrefor Richard Morgan2,3795.63
Rhondda EastJames Kitchener Davies2,1236.13
University of WalesGwenan Jones1,69624.52

By-elections 1945-1950

ElectionCandidateVotes%Position
1946 Ogmore by-electionTrefor Richard Morgan5,68529.42
1946 Aberdare by-electionWynne Samuel7,09020.02

1950 general election

ConstituencyCandidateVotes%Position
AberdareWynne Samuel3,3107.53
CaernarvonJohn Edward Jones4,88213.14
LlanellyDavid Eirwyn Morgan2,1343.84
MerionethGwynfor Evans2,75411.04
Rhondda EastDavid James Davies1,3573.94
Rhondda EastJames Kitchener Davies2,1836.63
WrexhamGeraint Bowen9601.74

1951 general election

ConstituencyCandidateVotes%Position
AberdareWynne Samuel2,6916.13
LlanellyDavid Eirwyn Morgan3,7656.93
Rhondda WestJames Kitchener Davies2,4677.73
WrexhamDan Thomas1,9973.63

By-elections 1951-1955

ElectionCandidateVotes%Position
1955 Wrexham by-electionElystan Morgan4,57211.33

1955 general election

ConstituencyCandidateVotes%Position
AberdareTrefor Beasley3,7039.43
AbertilleryTrefor Richard Morgan1,2594.13
AngleseyJ. Rowland Jones2,1837.53
CaernarvonRobert E. Jones5,81516.53
CarmarthenJennie Eirian Davies3,8357.83
ConwayIoan Bowen Rees3,0197.83
GowerChris Rees4,10110.63
LlanellyDavid Eirwyn Morgan6,39812.53
MerionethGwynfor Evans5,24322.23
Rhondda EastNoel Williams2,7768.84
Rhondda WestGlyn James4,42415.32
WrexhamElystan Morgan5,13910.43

By-elections 1955-1959

ElectionCandidateVotes%Position
1956 Newport by-electionEmrys Roberts1,9783.83
1957 Carmarthen by-electionJennie Eirian Davies5,74111.53
1958 Pontypool by-electionBenjamin Morgan2,92710.03

1959 general election

ConstituencyCandidateVotes%Position
AberavonIixtyd Lewis3,0666.63
AberdareKen Thomas3,3678.23
AngleseyR. Tudur Jones4,12114.63
CaernarvonDafydd Orwig Jones7,29321.23
CaerphillyJohn Howell3,4208.83
Cardiff NorthEmrys Roberts2,5535.13
CardiganGareth Evans3,88012.83
CarmarthenHywel Heulyn Roberts2,5455.23
ConwayIoan Bowen Rees2,8527.64
DenbighDafydd Alun Jones3,0777.24
GowerJ. Gwyn Griffiths3,7449.13
LlanellyDavid Eirwyn Morgan7,17613.83
MerionethGwynfor Evans5,12722.93
PembrokeshireWaldo Williams2,2534.33
PontypoolBenjamin Morgan2,5196.63
Rhondda EastNoel Williams2,7768.84
Rhondda WestGlyn James4,97817.02
Swansea EastChris Rees4,65110.53
West FlintshireNefyl Williams1,5944.14
WrexhamElystan Morgan6,57912.23

By-elections 1959-1964

ElectionCandidateVotes%Position
1960 Ebbw Vale by-electionEmrys Roberts2,0917.04
1962 Montgomeryshire by-electionIslwyn Ffowc Elis1,5946.24
1963 Swansea East by-electionChris Rees1,6205.24

1964 general election

ConstituencyCandidateVotes%Position
AberavonGlyn John2,1184.63
AberdareDewi Thomas2,7237.23
AngleseyR. Tudur Jones1,8176.54
Brecon and RadnorTrefor Richard Morgan2,1655.23
CaernarvonRobert E. Jones6,99821.43
CaerphillyPhil Williams3,95611.03
Cardiff NorthEmrys Roberts1,0582.24
CardiganGareth Evans3,26210.94
CarmarthenGwynfor Evans5,49511.73
ConwayGwilym Hughes3,0588.33
DenbighDafydd Alun Jones3,4447.94
GowerJ. Gwyn Griffiths2,5626.53
LlanellyPennar Davies3,4697.04
MerionethElystan Morgan3,69716.93
Merthyr TydfilIoan Bowen Rees2,8789.33
MontgomeryshireIslwyn Ffowc Elis2,1678.54
OgmoreMargaret Tucker2,4705.33
PembrokeshireDyfrig Thomas1,7173.44
PontypoolBenjamin Morgan2,5196.63
Rhondda EastGlyn James2,3618.24
Rhondda WestHenry V. Davies2,66810.23
Swansea EastChris Rees3,5568.43
West FlintshireNefyl Williams1,1953.04
WrexhamJohn R. Thomas4,6738.93

By-elections 1964-1966

ElectionCandidateVotes%Position
1965 Abertillery by-electionEdward Merriman1,5516.73

1966 general election

ConstituencyCandidateVotes%Position
AberdareJ. Eaton Williams3,0738.63
AngleseyJohn Wynn Meredith2,5969.63
Brecon and RadnorTrefor Richard Morgan2,4106.13
CaernarvonHumphrey Roberts6,83421.73
CaerphillyJohn D. Howell3,94911.13
CardiganshireEdward Millward2,4698.14
CarmarthenGwynfor Evans7,41616.13
ConwayRobert E. Jones2,5526.73
DenbighMeredith Edwards2,6956.14
East FlintshireGwilym Hughes9021.94
LlanelliPennar Davies5,13210.93
MerionethIeuan Lewis Jenkins2,49011.43
Merthyr TydfilMeic Stephens3,36111.53
MontgomeryshireTrefor Edwards1,8417.44
PembrokeshireJack Sheppard2,4605.04
Rhondda EastGlyn James2,0887.53
Rhondda WestHenry Victor Davies2,1728.72
Swansea EastChris Rees2,7496.83
West FlintshireD. Alun Lloyd1,5853.84
WrexhamJohn R. Thomas2,2974.54

By-elections 1966-1970

ElectionCandidateVotes%Position
1966 Carmarthen by-electionGwynfor Evans16,17939.01
1967 Rhondda West by-electionHenry V. Davies10,06739.92
1968 Caerphilly by-electionPhil Williams14,27440.42

1970 general election

ConstituencyCandidateVotes%Position
AberavonGeorge Farmer3,9128.43
AberdareGareth Morgan Jones11,43130.02
AbertilleryDavid B. Harries1,7516.23
AngleseyJohn Lasarus Williams7,14022.13
BarryOgwen Williams4,2007.13
BedwelltyCharles Davey3,78010.03
Brecon and RadnorGeorge Jenkins2,3495.43
CaernarfonRobyn Lewis11,33133.42
CaerphillyPhil Williams11,50528.52
Cardiff NorthMorgan Edwards1,9274.14
Cardiff South EastRichard Davies2,5855.13
Cardiff WestD. J. Hughes4,37810.13
CardiganshireHywel ap Robert6,49819.73
CarmarthenGwynfor Evans14,81230.12
ConwayDafydd Elis-Thomas4,31110.83
DenbighE. Gwynn Matthews5,25411.04
East FlintshireGwilym Hughes2,3324.44
Ebbw ValeDerek Baskerville1,8056.04
GowerClifford Davies5,86914.03
LlanelliCarwyn James8,38716.82
MerionethshireDafydd Wigley5,42524.32
Merthyr TydfilChris Rees3,0769.64
MonmouthStuart Neale1,5012.54
MontgomeryshireEdward Millward3,14511.84
NeathGlyn John4,01210.13
NewportBob Vickery1,9973.73
OgmoreTed Merriman5,82811.73
PembrokeshireWynne Samuel3,6816.74
PontypoolHarri Webb2,0535.33
PontypriddE. Jones5,05910.44
Rhondda EastGlyn James6,93124.32
Rhondda WestHenry Victor Davies3,52814.12
Swansea EastRoderick Evans4,18810.23
Swansea WestGuto ap Gwent3,0336.23
West FlintshireOgwen Jones3,1086.94
WrexhamCyril Golding2,8945.34

By-elections 1970-1974

ElectionCandidateVotes%Position
1972 Merthyr Tydfil by-electionEmrys Roberts11,85237.02

February 1974 general election

ConstituencyCandidateVotes%Position
AberavonD. G. Foster5,89812.23
AberdareGlyn Owen11,97329.92
AbertilleryA. Richards3,11910.92
AngleseyDafydd Iwan7,61021.73
BarryValerie Wynne-Williams1,9243.44
BedwelltyA. Moore3,0487.74
Brecon and RadnorDafydd Noel Gittins2,0994.74
CaernarfonDafydd Wigley14,10340.51
CaerphillyPhil Williams11,95627.52
Cardiff NorthP. Richards1,5864.64
Cardiff North WestColin Palfrey1,2273.44
Cardiff South EastKeith Bush1,2543.05
Cardiff WestDafydd Hughes2,0935.54
CardiganshireC. Davies4,75413.34
CarmarthenGwynfor Evans17,16234.32
ConwayM. Farmer4,20310.14
DenbighE. G. Matthews4,1038.14
East FlintshireNeil Taylor1,1352.04
Ebbw ValeJ. D. Rogers1,7675.94
GowerJ. N. Harris3,7418.34
LlanelliR. Williams6,02012.04
MerionethDafydd Elis-Thomas7,82334.61
Merthyr TydfilEmrys Roberts7,33622.92
MonmouthTed Spanswick9301.54
MontgomeryshireA. Jones2,2748.34
NeathHuw Evans8,75821.52
NewportP. Cox9361.64
OgmoreTed Merriman5,1399.64
PembrokeshireR. V. Davies2,8204.84
PontypoolRoger Tanner1,3083.14
PontypriddRichard Anthony Kemp4,6128.64
RhonddaGlyn James6,73912.92
Swansea EastJohn Graham Ball5,13511.93
Swansea WestDerrick Hearne1,8593.64
West FlintshireGwilym Hughes2,2964.44
WrexhamH. W. Roberts2,6244.54

October 1974 general election

ConstituencyCandidateVotes%Position
AberavonG. Thomas4,0328.54
AberdareGlyn Owen8,13321.32
AbertilleryW. A. Richards2,4809.02
AngleseyDafydd Iwan6,41019.13
BarryValerie Wynne-Williams1,7933.34
BedwelltyDavid Mogford3,0868.04
Brecon and RadnorDafydd Noel Gittins2,3005.24
CaernarfonDafydd Wigley14,62442.61
CaerphillyPhil Williams10,45224.52
Cardiff NorthP. Richards1,4644.64
Cardiff North WestColin Palfrey1,2783.74
Cardiff South EastKeith Bush9832.44
Cardiff WestDafydd Hughes2,0085.54
CardiganshireC. Davies4,58313.24
CarmarthenGwynfor Evans23,32545.11
ConwayM. Farmer4,66811.84
DenbighIeuan Wyn Jones5,75411.94
East FlintshireF. Evans1,7793.24
Ebbw ValeG. Robert2,1017.34
GowerM. Powell4,36910.04
LlanelliR. Williams6,79713.73
MerionethDafydd Elis-Thomas9,54342.51
Merthyr TydfilEmrys Roberts4,45514.82
MonmouthT. Brimmacombe8391.44
MontgomeryshireA. P. Jones2,4409.34
NeathHuw Evans7,30517.92
NewportG. Lee1,2162.14
OgmoreD. I. Jones4,2908.44
PembrokeshireR. V. Davies2,5804.54
PontypoolRoger Tanner2,2235.64
PontypriddRichard Anthony Kemp3,9177.64
RhonddaD. Morgan4,1738.32
Swansea EastJohn Graham Ball3,9789.54
Swansea WestGuto ap Gwent1,7783.64
West FlintshireNeil Taylor2,3064.84
WrexhamH. W. Roberts2,8595.14

1979 general election

ConstituencyCandidateVotes%Position
AberavonG. Thomas1,9543.84
AberdarePhil Richards3,6529.83
AbertilleryDavid Harries2,2487.93
AngleseyJohn Lasarus Williams7,86320.33
BarryJohn Dixon1,2812.14
BedwelltyT. Richards2,6486.63
Brecon and RadnorJ. Power1,0312.24
CaernarfonDafydd Wigley17,42049.71
CaerphillyPhil Williams6,93114.93
Cardiff NorthOwen John Thomas1,0813.04
Cardiff North WestColin Palfrey7432.14
Cardiff South EastEric Roberts6281.63
Cardiff WestA. Ogwen3,27210.42
CardiganshireDafydd Hughes5,38214.54
CarmarthenGwynfor Evans16,68932.02
ConwayEmyr Price3,4978.64
DenbighIeuan Wyn Jones4,9159.34
East FlintshireJohn Rogers1,1982.04
Ebbw ValeG. ap Roberts1,8846.54
GowerEifion Thomas3,3577.24
LlanelliHywel Roberts3,7937.44
MerionethDafydd Elis-Thomas9,27540.81
Merthyr TydfilEurfyl ap Gwilym2,9629.43
MonmouthG. Williams6411.04
MontgomeryshireCarl Iwan Clowes2,4409.34
NeathAled Gwyn6,43015.33
NewportBob Vickery4730.84
OgmoreD. I. Jones2,4504.44
PembrokeshireRon Dawe1,5732.54
PontypoolBill Hyde1,1692.64
PontypriddElfed Roberts2,2003.84
RhonddaGlyn James4,2268.43
Swansea EastJohn Graham Ball2,7326.04
Swansea WestGuto ap Gwent1,0121.94
West FlintshireB. M. Edwards1,7203.24
WrexhamH. W. Roberts1,7402.84

By-elections 1979-1983

ElectionCandidateVotes%Position
1982 Gower by-electionIeuan Owen3,4318.74

1983 general election

ConstituencyCandidateVotes%Position
AberavonGlenn Phillips1,8594.64
Alyn and DeesideAlan Shore4130.94
Blaenau GwentStephen Morgan1,6243.84
Brecon and RadnorSian Rosmari Meredudd6401.74
BridgendKeith Bush1,3123.24
CaernarfonDafydd Wigley18,30852.71
CaerphillyLindsay Whittle6,41413.64
Cardiff CentralAndrew Paul Morgan7041.84
Cardiff NorthDafydd Huws9742.44
Cardiff South and PenarthSian Anghared Edwards6731.64
Cardiff WestMeurig Parri8482.14
CarmarthenGwynfor Evans14,09927.13
Ceredigion and Pembroke NorthCynog Dafis6,07212.94
Clwyd North WestManon Rhys1,6693.74
Clwyd South WestToni Schiavone3,6848.64
ConwyDafydd Iwan4,10510.44
Cynon ValleyPauline Jarman3,4219.34
DelynHaydn Huws1,5583.24
GowerN. Williams1,4443.24
IslwynAneurin Richards1,5744.04
LlanelliHywel Teifi Edwards5,88012.24
Meirionnydd Nant ConwyDafydd Elis-Thomas9,70939.21
Merthyr Tydfil and RhymneyGerald Howells2,0585.84
MonmouthGwynddri Williams4931.14
MontgomeryshireCarl Iwan Clowes1,5855.34
NeathIeuan Owen3,0467.24
Newport EastDavid Thomas6971.74
Newport WestDenis Watkins4771.14
OgmoreTed Merriman3,1247.94
PembrokeshireOsi Rhys Osmond1,0732.04
PontypriddJanet Marion Davies2,0654.74
RhonddaGeraint Rhys Davies4,84510.23
Swansea EastC. Reid1,5313.74
Swansea WestMeirion Pennar7951.94
TorfaenPhyllis Cox8962.14
Vale of GlamorganAndrew John Dixon1,0682.34
WrexhamJohn Richard Thomas1,2392.64
Ynys MônIeuan Wyn Jones13,33333.32

By-elections 1983-1987

ElectionCandidateVotes%Position
1984 Cynon Valley by-electionClayton Jones3,61911.03
1985 Brecon and Radnor by-electionJanet Marion Davies4351.14

1987 general election

ConstituencyCandidateVotes%Position
AberavonAnne Louisa Howells1,1242.84
Alyn and DeesideJohn Dudley Rogers4781.04
Blaenau GwentStephen Morgan1,6213.84
Brecon and RadnorJohn Hamilton Davies5351.34
BridgendLaura McAllister1,0652.34
CaernarfonDafydd Wigley20,33857.11
CaerphillyLindsay Whittle3,9558.14
Cardiff CentralSiân Mair Caiach5351.34
Cardiff NorthEluned Mary Bush6921.64
Cardiff South and PenarthSian Anghared Edwards5991.34
Cardiff WestPeter John Keelan7361.74
CarmarthenHywel Teifi Edwards12,45723.03
Ceredigion and Pembroke NorthCynog Dafis7,84816.34
Clwyd North WestRobert Karl Davies1,9664.04
Clwyd South WestEifion Lloyd Jones3,9878.44
ConwyRhodri Davies3,1777.84
Cynon ValleyDorothy Louise Richards2,5496.74
DelynDavid John Owen1,3292.54
GowerJonathan Gwyn Mendus Edwards1,3412.84
IslwynAneurin Richards1,9324.84
LlanelliAdam Price5,08810.24
Meirionnydd Nant ConwyDafydd Elis-Thomas10,39240.01
Merthyr Tydfil and RhymneyJanet Marion Davies2,0854.74
MonmouthSian Rosmari Meredudd3630.84
MontgomeryshireCarl Iwan Clowes1,4124.54
NeathHuw John2,7926.44
Newport EastGareth Butler4581.14
Newport WestDigby John Bevan3770.84
OgmoreJohn Griffiths Jones1,7914.44
PembrokeshireOsi Rhys Osmond1,1192.04
PontypriddDelme Bowen2,4985.34
RhonddaGeraint Rhys Davies4,2618.92
Swansea EastC. Reid1,1452.74
Swansea WestNigel Williams9022.04
TorfaenJill Evans5771.34
Vale of GlamorganPenri Gwyn Williams9461.84
WrexhamDennis Ronald Watkins5391.14
Ynys MônIeuan Wyn Jones18,58043.21

By-elections 1987-1992

ElectionCandidateVotes%Position
1989 Pontypridd by-electionSyd Morgan9,77525.32
1989 Vale of Glamorgan by-electionAndrew John Dixon1,6723.54
1991 Neath by-electionDewi Evans8,13223.32
1991 Monmouth by-electionMelvin John Witherden2770.65

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

1992 general election

ConstituencyCandidateVotes%Position
AberavonDavid Saunders1,9194.84
Alyn and DeesideJohn D. Rogers5511.14
Blaenau GwentAlun Davies2,0994.84
Brecon and RadnorSian Meredudd4180.94
BridgendAlun Lloyd Jones1,3012.84
CaernarfonDafydd Wigley21,43959.01
CaerphillyLindsay Whittle4,8219.73
Cardiff CentralHuw Marshall7481.74
Cardiff NorthEluned Mary Bush9161.94
Cardiff South and PenarthBarbara Anglezarke7761.64
Cardiff WestPenni Bestic1,1772.64
CarmarthenRhodri Glyn Thomas17,95731.52
Ceredigion and Pembroke NorthCynog Dafis16,02031.31
Clwyd North WestNeil H. Taylor1,8883.64
Clwyd South WestEifion Lloyd Jones4,8359.84
ConwyRhodri Davies3,1087.44
Cynon ValleyGeraint Benney4,18611.03
DelynAshley J. Drake1,4142.64
GowerAdam Price1,6582.84
IslwynHelen Mary Jones1,6363.94
LlanelliMarc Phillips7,87815.63
Meirionnydd Nant ConwyElfyn Llwyd11,60844.01
Merthyr Tydfil and RhymneyAlun Cox2,7046.14
MonmouthMelvin Witherden4310.94
MontgomeryshireHugh Parsons1,5814.84
NeathDewi Evans5,14511.33
Newport EastStephen Ainley7161.74
Newport WestPeter John Keelan6531.44
OgmoreLaura McAllister2,6676.34
PembrokeshireConrad Bryant1,6272.74
PontypriddDelme Bowen4,4489.13
RhonddaGeraint Rhys Davies5,42711.82
Swansea EastEleanor Bonner-Evans1,6073.64
Swansea WestDavid Lloyd1,6683.84
TorfaenJohn Cox1,2102.64
Vale of GlamorganDavid Haswell1,1602.14
WrexhamGareth Wheatley1,4152.84
Ynys MônIeuan Wyn Jones15,98437.11

By-elections 1992-1997

ElectionCandidateVotes%Position
1995 Islwyn by-electionJocelyn Davies2,93312.72

1997 general election

ConstituencyCandidateVotes%Position
AberavonPhilip Cockwell2,0885.84
Alyn and DeesideSiw Hills7381.85
Blaenau GwentJim Criddle2,0725.24
Brecon and RadnorshireSteven Cornelius6221.55
BridgendDennis Watkins1,6493.85
CaerphillyLindsay Whittle4,3839.73
CaernarfonDafydd Wigley17,61651.01
Cardiff CentralWayne Vernon1,5043.65
Cardiff NorthColin Palfrey1,2012.54
Cardiff South and PenarthDavid Haswell1,3563.25
Cardiff WestGwenllian Carr1,9494.84
Carmarthen East and DinefwrRhodri Glyn Thomas14,45734.62
Carmarthen West and South PembrokeshireRoy Llewellyn5,40212.73
CeredigionCynog Dafis16,72841.61
Clwyd SouthGareth Williams2,5006.34
Clwyd WestEryl Williams5,42113.53
ConwyRhodri Vaughan Davies2,8446.84
Cynon ValleyAlun Davies3,55210.62
DelynAshley J. Drake1,5583.84
GowerD. Elwyn Williams2,2265.14
IslwynDarren Jones2,2726.24
LlanelliMarc Phillips7,81219.02
Meirionnydd Nant ConwyElfyn Llwyd12,46550.71
Merthyr TydfilAlun G. Cox2,3446.04
MonmouthAlan Cotton5161.15
MontgomeryshireHelen Mary Jones1,6085.04
NeathTrefor Jones3,3448.13
Newport EastChristopher Holland7211.96
Newport WestHuw Jackson6481.65
OgmoreJohn Rogers2,6797.04
PontypriddOwain Llewelyn2,9776.54
Preseli PembrokeshireAlun Lloyd Jones2,6836.34
RhonddaLeanne Wood5,45013.42
Swansea EastMichelle Pooley1,3083.44
Swansea WestDai Lloyd2,6756.64
TorfaenRobert W. Gough1,0422.45
Vale of ClwydGwyneth Kensler2,3015.94
Vale of GlamorganMelanie Corp1,3932.64
WrexhamKevin Plant1,1703.25
Ynys MônIeuan Wyn Jones15,75639.51

By-elections 1997-2001

ElectionCandidateVotes%Position
2000 Ceredigion by-electionSimon George Thomas10,71642.81

2001 general election

ConstituencyCandidateVotes%Position
AberavonLisa Turnbull2,9559.82
Alyn and DeesideRichard Coombs1,1823.34
Blaenau GwentAdam John Rykala3,54211.22
Brecon and RadnorshireBrynach Parri1,3013.54
BridgendMonica Emma Mahoney2,6537.24
CaerphillyLindsay Whittle8,17221.02
CaernarfonHywel Williams12,89444.41
Cardiff CentralRichard Rhys Grigg1,6804.84
Cardiff NorthSion Tomos Jobbins2,4715.74
Cardiff South and PenarthLila Eilis Maire Haines1,9835.54
Cardiff WestDelme Bowen3,2969.74
Carmarthen East and DinefwrAdam Robert Price16,13042.41
Carmarthen West and South PembrokeshireLlyr Huws Gruffydd6,89318.73
CeredigionSimon Thomas13,24138.31
Clwyd SouthDyfed Wyn Edwards3,98211.93
Clwyd WestHuw Elfed Williams4,45312.93
ConwyAnn Owen5,66516.54
Cynon ValleySteven J. Cornelius4,68717.42
DelynPaul John Rowlinson2,2626.54
GowerSiân Mair Caiach3,86510.34
IslwynLeigh Thomas3,76711.93
LlanelliDyfan Rhys Jones11,18330.92
Meirionnydd Nant ConwyElfyn Llwyd10,45949.61
Merthyr TydfilRobert Hughes4,65114.72
MonmouthMarc Hubbard1,0682.44
MontgomeryshireDavid Senior1,9696.84
NeathAlun Llewelyn6,43718.42
Newport EastMadoc Batcup1,5194.94
Newport WestAnthony Salkeld2,5107.24
OgmoreAngela Pulman4,25914.02
PontypriddBleddyn Hancock5,27913.82
Preseli PembrokeshireRhys Sinnett4,65812.73
RhonddaLeanne Wood7,18321.12
Swansea EastJohn Ball3,46411.54
Swansea WestIan Titherington3,40410.64
TorfaenStephen Paul Smith2,7207.74
Vale of ClwydJohn Williams2,3007.14
Vale of GlamorganChris Franks2,8676.34
WrexhamMalcolm William Evans1,7835.94
Ynys MônEilian Williams11,10632.62

By-elections 2001-2005

ElectionCandidateVotes%Position
2002 Ogmore by-electionBleddyn Hancock3,82720.82

2005 general election

ConstituencyCandidateVotes%Position
AberavonPhilip Evans3,54511.83
Alyn and DeesideRichard Coombs1,3203.74
Blaenau GwentJohn Price8432.44
Brecon and RadnorshireMabon ap Gwynfor1,4043.74
BridgendGareth Clubb2,5276.74
CaerphillyLindsay Whittle6,83117.42
CaernarfonHywel Williams12,74745.51
Cardiff CentralRichard Rhys Grigg1,2713.54
Cardiff NorthJohn Rowlands1,9364.34
Cardiff South and PenarthJason Toby2,0235.54
Cardiff WestNeil McEvoy4,31612.54
Carmarthen East and DinefwrAdam Robert Price17,56145.91
Carmarthen West and South PembrokeshireJohn Dixon5,58214.73
CeredigionSimon Thomas12,91135.92
Clwyd SouthMark Strong3,1119.44
Clwyd WestEilian Williams3,87410.94
ConwyPaul Rowlinson3,73011.14
Cynon ValleyGeraint Benney3,81514.32
DelynPhil Thomas2,5247.44
GowerSiân Mair Caiach3,0897.84
IslwynJim Criddle3,94712.82
LlanelliNeil Baker9,35826.52
Meirionnydd Nant ConwyElfyn Llwyd10,59751.31
Merthyr TydfilNoel Turner2,9729.94
MonmouthJonathan Clark9932.24
MontgomeryshireEllen ap Gwynn2,0786.94
NeathGeraint Owen6,12517.12
Newport EastMohammad Asghar1,2213.84
Newport WestAnthony Salkeld1,2783.64
OgmoreJohn Williams3,14810.44
PontypriddJulie Richards4,42011.24
Preseli PembrokeshireMatt Mathias4,75212.34
RhonddaPercy Jones4,95615.92
Swansea EastCarolyn Shan Couch2,1296.94
Swansea WestHarri Roberts2,1506.54
TorfaenAneurin Preece2,2426.24
Vale of ClwydMark Jones2,3097.14
Vale of GlamorganBarry Shaw2,4235.14
WrexhamSion Owen1,7445.74
Ynys MônEurig Wyn11,03631.12

By-elections 2005-2010

ElectionCandidateVotes%Position
2006 Blaenau Gwent by-electionSteffan Lewis1,7556.53

2010 general election

ConstituencyCandidateVotes%Position
AberavonPaul Nicholls-Jones2,1987.14
AberconwyPhil Edwards5,34117.84
Alyn and DeesideMaurice Jones1,5493.94
ArfonHywel Williams9,38336.01
Blaenau GwentRhodri Davies1,3334.15
Brecon and RadnorshireJanet Davies9892.54
BridgendNicholas Thomas2,2695.94
CaerphillyLindsay Whittle6,46016.73
Cardiff CentralChris Williams1,2463.44
Cardiff NorthLlewelyn Rhys1,5883.34
Cardiff South and PenarthFarida Aslam1,8514.24
Cardiff WestMohammad Sarul Islam2,8687.04
Carmarthen East and DinefwrJonathan Edwards13,54635.61
Carmarthen West and South PembrokeshireJohn Dixon4,23210.44
CeredigionPenri James10,81528.32
Clwyd SouthJanet Ryder3,0098.74
Clwyd WestLlyr Huws Gruffydd5,86415.43
Cynon ValleyDafydd Trystan Davies6,06420.32
DelynPeter Ryder1,8445.04
Dwyfor MeirionyddElfyn Llwyd12,81444.31
GowerDarren Price2,7606.64
IslwynSteffan Lewis4,51813.03
LlanelliMyfanwy Davies11,21529.92
Merthyr TydfilGlyndwr Jones1,6215.15
MonmouthJonathan Clark1,2732.74
MontgomeryshireHeledd Fychan2,8028.33
NeathAlun Llewelyn7,39719.92
Newport EastFiona Cross7242.15
Newport WestJeff Rees1,1222.86
OgmoreDanny Clark3,3269.64
PontypriddIoan Bellin2,6737.34
Preseli PembrokeshireHenry Jones-Davies3,6549.24
RhonddaGeraint Davies5,63018.12
Swansea EastDic Jones2,1816.74
Swansea WestHarri Roberts1,4374.04
TorfaenRhys ab Elis2,0055.34
Vale of ClwydCaryl Wyn-Jones2,0685.84
Vale of GlamorganIan James Johnson2,6675.54
WrexhamArfon Jones2,0296.24
Ynys MônDylan Rees9,02926.22

By-elections 2010-2015

ElectionCandidateVotes%Position
2012 Cardiff South and Penarth by-electionLuke Nicholas1,8549.54

2015 general election

ConstituencyCandidateVotes%Position
AberavonDuncan Higgitt3,66311.64
AberconwyDafydd Meurig3,53611.73
Alyn and DeesideJacqueline Ann Hurst1,6083.95
ArfonHywel Williams11,79043.91
Blaenau GwentSteffan Lewis2,8499.04
Brecon and RadnorshireFreddy Greaves1,7674.45
BridgendJames Christopher Radcliffe2,7847.14
CaerphillyBeci Newton5,89514.64
Cardiff CentralMartin Pollard1,9255.06
Cardiff NorthElin Walker Jones2,3014.54
Cardiff South and PenarthBen Foday3,4337.44
Cardiff WestNeil McEvoy6,09613.93
Carmarthen East and DinefwrJonathan Edwards15,14038.41
Carmarthen West and South PembrokeshireElwyn Williams4,20110.44
CeredigionMike Parker10,34727.72
Clwyd SouthMabon ap Gwynfor3,62010.34
Clwyd WestMarc Jones4,65112.24
Cynon ValleyCerith Griffiths5,12616.82
DelynPaul Rowlinson1,8034.84
Dwyfor MeirionyddLiz Saville-Roberts11,81140.91
GowerDarren Thomas3,0517.14
IslwynLyn Ackerman3,79410.74
LlanelliVaughan Williams8,85323.02
Merthyr TydfilRhayna Pritchard3,0999.54
MonmouthJonathan Clark1,8753.95
MontgomeryshireAnn Griffith1,7455.25
NeathDaniel Thomas6,72218.12
Newport EastTony Salkeld1,2313.55
Newport WestSimon Coopey1,6044.04
OgmoreTim Thomas3,55610.14
PontypriddOsian Lewis4,34811.55
Preseli PembrokeshireJohn Osmond2,5186.25
RhonddaShelley Rees-Owen8,52127.02
Swansea EastDic Jones3,49810.44
Swansea WestHarri Roberts2,2666.45
TorfaenBoydd Hackley-Green2,1695.74
Vale of ClwydMair Rowlands2,4867.14
Vale of GlamorganIan James Johnson2,8695.64
WrexhamCarrie Harper2,5017.64
Ynys MônJohn Rowlands10,64230.52

By-elections 2015-2017

ElectionCandidateVotes%Position
2016 Ogmore by-electionAbi Thomas3,68315.73

2017 general election

ConstituencyCandidateVotes%Position
AberavonAndrew Bennison2,7618.33
AberconwyWyn Elis Jones3,1709.93
Alyn and DeesideJacqueline Ann Hurst1,1712.63
ArfonHywel Williams11,51940.81
Blaenau GwentNigel Copner6,88021.22
Brecon and RadnorshireKate Heneghan1,2993.14
BridgendRhys Watkins1,7834.13
CaerphillyLindsay Whittle5,96214.43
Cardiff CentralMark Hooper9992.54
Cardiff NorthSteffan Webb1,7383.33
Cardiff South and PenarthIan Titherington2,1624.33
Cardiff WestMichael Deem4,4189.53
Carmarthen East and DinefwrJonathan Edwards16,12739.31
Carmarthen West and South PembrokeshireAbi Thomas3,9339.33
CeredigionBen Lake11,62329.21
Clwyd SouthChristopher Allen2,2926.13
Clwyd WestDilwyn Roberts3,9189.63
Cynon ValleyLiz Walters4,37613.83
DelynPaul Rowlinson1,4813.83
Dwyfor MeirionyddLiz Saville-Roberts13,68745.11
GowerHarri Roberts1,6693.73
IslwynDarren Jones2,7397.63
LlanelliMari Arthur7,35118.23
Merthyr Tydfil and RhymneyAmy Kitcher2,7408.23
MonmouthCarole Damon1,3382.74
MontgomeryshireAled Hughes1,9605.64
NeathDaniel Williams5,33913.93
Newport EastCameron Wixcey8812.45
Newport WestMorgan Bowler-Brown1,0772.54
OgmoreHuw Marshall2,7967.53
PontypriddFflur Elin4,10210.33
Preseli PembrokeshireOwain Llŷr Williams2,7116.43
RhonddaBranwen Cennard7,35022.32
Swansea EastSteffan Phillips1,6894.83
Swansea WestRhydian Fitter1,5294.13
TorfaenJeff Rees2,0595.43
Vale of ClwydDavid Wyatt1,5514.03
Vale of GlamorganIan Johnson2,2954.33
WrexhamCarrie Harper1,7535.03
Ynys MônIeuan Wyn Jones10,23727.43

By-elections 2017-2019

ElectionCandidateVotes%Position
2019 Newport West by-electionJonathan Clarke1,1855.04

2019 general election

ConstituencyCandidateVotes%Position
AberavonNigel Hunt2,7118.64
AberconwyLisa Goodier2,7048.53
Alyn and DeesideSusan Hills1,4533.45
ArfonHywel Williams13,13445.21
Blaenau GwentPeredur Owen Griffiths1,7225.74
BridgendLeanne Lewis2,0134.84
CaerphillyLindsay Whittle6,42416.03
Cardiff NorthRhys Taylor3,5806.83
Cardiff South and PenarthNasir Adam2,3864.74
Cardiff WestBoyd Clack3,8648.43
Carmarthen East and DinefwrJonathan Edwards15,93938.91
Carmarthen West and South PembrokeshireRhys Thomas3,6338.63
CeredigionBen Lake15,20837.91
Clwyd SouthChristopher Allen2,1375.93
Clwyd WestElfed Williams3,9079.73
Cynon ValleyGeraint Benney2,5628.54
DelynPaul Rowlinson1,4063.75
Dwyfor MeirionyddLiz Saville-Roberts14,44748.31
GowerJohn Davies2,2885.13
IslwynZoe Hammond2,2876.74
LlanelliMari Arthur7,04818.43
Merthyr Tydfil and RhymneyMark Evans2,4497.64
MonmouthHugh Kocan1,1822.45
NeathDaniel Williams4,49512.23
Newport EastCameron Wixcey8722.45
Newport WestMorgan Bowler-Brown1,1872.75
OgmoreLuke Fletcher2,9198.34
PontypriddFflur Elin4,99012.83
Preseli PembrokeshireCris Tomos2,7766.53
RhonddaBranwen Cennard4,06913.73
Swansea EastGeraint Havard1,9075.74
Swansea WestGwyn Williams1,9845.54
TorfaenMorgan Bowler-Brown1,4413.94
Vale of ClwydGlenn Swingler1,5524.23
WrexhamCarrie Harper2,1516.43
Ynys MônAled ap Dafydd10,41828.53

References

  1. 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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