This article lists Plaid Cymru's election results in UK parliamentary, European parliamentary, and Senedd elections.
Westminster elections
| Year | 
Constituencies | 
Votes
 | 
Number of candidates | 
Saved deposits[1] | 
Number of elected MPs | 
Change | 
Total | 
Average per candidate | 
% UK vote | 
% Welsh vote | 
Change (percentage points)
 | 
| 
 | 
1929 | 
1 | 
0 | 
– | 
  | 
609 | 
609 | 
0.0% | 
0.0% | 
New
 | 
| 
 | 
1931 | 
2 | 
1 | 
– | 
  | 
2,050 | 
1,025 | 
0.0% | 
0.2% | 
  0.2
 | 
| 
 | 
1935 | 
1 | 
0 | 
– | 
  | 
2,534 | 
2,534 | 
0.0% | 
0.3% | 
  0.1
 | 
| 
 | 
1945 | 
7 | 
1 | 
– | 
  | 
16,017 | 
2,288 | 
0.0% | 
1.2% | 
  0.9
 | 
| 
 | 
1950 | 
7 | 
1 | 
– | 
  | 
17,580 | 
2,288 | 
0.1% | 
1.2% | 
  0.0
 | 
| 
 | 
1951 | 
4 | 
0 | 
– | 
  | 
10,920 | 
2,730 | 
0.0% | 
0.7% | 
  0.5
 | 
| 
 | 
1955 | 
11 | 
4 | 
– | 
  | 
45,119 | 
4,102 | 
0.2% | 
3.1% | 
  2.4
 | 
| 
 | 
1959 | 
20 | 
6 | 
– | 
  | 
77,571 | 
3,879 | 
0.3% | 
5.2% | 
  2.1
 | 
| 
 | 
1964 | 
23 | 
2 | 
– | 
  | 
69,507 | 
3,022 | 
0.3% | 
4.8% | 
  0.2
 | 
| 
 | 
1966 | 
20 | 
2 | 
– | 
  | 
61,071 | 
3,054 | 
0.2% | 
4.3% | 
  0.5
 | 
| 
 | 
1970 | 
36 | 
11 | 
– | 
  | 
175,016 | 
4,862 | 
0.6% | 
11.5% | 
  7.2
 | 
| 
 | 
1974 Feb | 
36 | 
10 | 
2 | 
  2 | 
171,374 | 
4,760 | 
0.5% | 
10.8% | 
  0.7
 | 
| 
 | 
1974 Oct | 
36 | 
10 | 
3 | 
  1 | 
166,321 | 
4,620 | 
0.6% | 
10.8% | 
 
 | 
| 
 | 
1979 | 
36 | 
7 | 
2 | 
  1 | 
132,544 | 
3,682 | 
0.4% | 
8.2% | 
  2.6
 | 
| 
 | 
1983 | 
38 | 
6 | 
2 | 
  | 
125,309 | 
3,298 | 
0.4% | 
7.8% | 
  0.4
 | 
| 
 | 
1987 | 
38 | 
13 | 
3 | 
  1 | 
123,599 | 
3,253 | 
0.4% | 
7.3% | 
  0.5
 | 
| 
 | 
1992 | 
38 | 
15 | 
4 | 
  1 | 
156,796 | 
4,126 | 
0.5% | 
9.0% | 
  1.7
 | 
| 
 | 
1997 | 
40 | 
25 | 
4 | 
  | 
161,030 | 
4,026 | 
0.5% | 
9.9% | 
  0.9
 | 
| 
 | 
2001 | 
40 | 
35 | 
4 | 
  | 
195,893 | 
4,897 | 
0.7% | 
14.3% | 
  4.4
 | 
| 
 | 
2005 | 
40 | 
32 | 
3 | 
  1 | 
174,838 | 
4,371 | 
0.6% | 
12.6% | 
  1.7
 | 
| 
 | 
2010 | 
40 | 
29 | 
3 | 
  | 
165,394 | 
4,135 | 
0.6% | 
11.3% | 
  1.3
 | 
| 
 | 
2015 | 
40 | 
32 | 
3 | 
  | 
181,704 | 
4,543 | 
0.6% | 
12.1% | 
  0.9
 | 
| 
 | 
2017 | 
40 | 
24 | 
4 | 
  1 | 
164,466 | 
4,112 | 
0.5% | 
10.4% | 
  1.7
 | 
| 
 | 
2019 | 
36 | 
27 | 
4 | 
  | 
153,265 | 
4,257 | 
0.5% | 
9.9% | 
  0.5
 | 
| 
 | 
2024 | 
32 | 
29 | 
4 | 
  | 
194,811 | 
6,088 | 
0.7% | 
14.8% | 
 4.9
 | 
Welsh Assembly / Senedd elections
| Date
 | 
Constituency
 | 
Region
 | 
Total seats
 | 
| Votes
 | 
%
 | 
+/-
 | 
Seats
 | 
+/-
 | 
Votes
 | 
%
 | 
+/-
 | 
Top-up seats
 | 
+/-
 | 
Total
 | 
+/-
 | 
%
 | 
| 
 | 
1999 | 
290,572 | 
28.4% | 
N/A | 
 | 
N/A | 
312,048 | 
30.5% | 
N/A | 
 | 
N/A | 
 | 
N/A | 
28.3%
 | 
| 
 | 
2003 | 
180,185 | 
21.2% | 
  7.2 | 
 | 
  4 | 
167,653 | 
19.7% | 
  10.8 | 
 | 
  1 | 
 | 
  5 | 
20.0%
 | 
| 
 | 
2007 | 
219,121 | 
21.4% | 
  1.2 | 
 | 
  2 | 
204,757 | 
21.0% | 
  1.3 | 
 | 
  1 | 
 | 
  3 | 
25.0%
 | 
| 
 | 
2011 | 
182,907 | 
19.3% | 
  3.1 | 
 | 
  2 | 
169,799 | 
17.9% | 
  3.1 | 
 | 
  2 | 
 | 
  4 | 
18.3%
 | 
| 
 | 
2016 | 
209,376 | 
20.5% | 
  1.3 | 
 | 
  1 | 
211,548 | 
20.8% | 
  2.9 | 
 | 
  | 
 | 
  1 | 
20.0%
 | 
| 
 | 
2021 | 
225,376 | 
20.3% | 
  0.2 | 
 | 
  1 | 
230,161 | 
20.7 | 
  0.1 | 
 | 
  2 | 
 | 
  1 | 
21.6%
 | 
European Parliament elections
| Date
 | 
Votes
 | 
Welsh seats
 | 
| #
 | 
%
 | 
+/-
 | 
#
 | 
+/-
 | 
%
 | 
| 
 | 
1979 | 
83,399 | 
11.7% | 
N/A | 
 | 
N/A | 
0%
 | 
| 
 | 
1984 | 
103,031 | 
12.2% | 
  0.5 | 
 | 
  | 
0%
 | 
| 
 | 
1989 | 
115,062 | 
12.9% | 
  0.7 | 
 | 
  | 
0%
 | 
| 
 | 
1994 | 
162,478 | 
17.1% | 
  4.2 | 
 | 
  | 
0%
 | 
| 
 | 
1999 | 
185,235 | 
29.6% | 
  12.5 | 
 | 
  2 | 
40%
 | 
| 
 | 
2004 | 
159,888 | 
17.4% | 
  12.2 | 
 | 
  1 | 
25%
 | 
| 
 | 
2009 | 
126,702 | 
18.5% | 
  1.1 | 
 | 
  | 
25%
 | 
| 
 | 
2014 | 
111,864 | 
15.3% | 
  3.3 | 
 | 
  | 
25%
 | 
| 
 | 
2019 | 
163,928 | 
19.6% | 
  4.3 | 
 | 
  | 
25%
 | 
Elections results
1929 general election
1931 general election
1935 general election
By-elections 1935–1945
1945 general election
By-elections 1945–1950
1950 general election
1951 general election
By-elections 1951–1955
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
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
 | 
| Pembrokeshire | 
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
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
 | 
| Pembrokeshire | 
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
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
 | 
| Pembrokeshire | 
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
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
 | 
| Pembrokeshire | 
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
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
 | 
| Pembrokeshire | 
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
 | 
| Pembrokeshire | 
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
 | 
| Pembrokeshire | 
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
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 | 
Gwynddri 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
 | 
| Pembrokeshire | 
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
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
 | 
| Pembrokeshire | 
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
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
 | 
| Pembrokeshire | 
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
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 | 
Gwenllian 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 | 
Cynog Dafis | 
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
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
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
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
 | 
| 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
 | 
| 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
 | 
| Constituency | 
Candidate | 
Votes | 
% | 
Position
 | 
| Aberavon | 
Nigel Hunt | 
2,711 | 
8.6 | 
4
 | 
| Aberconwy | 
Lisa Goodier | 
2,704 | 
8.5 | 
3
 | 
| Alyn and Deeside | 
Susan Hills | 
1,453 | 
3.4 | 
5
 | 
| Arfon | 
Hywel Williams | 
13,134 | 
45.2 | 
1
 | 
| Blaenau Gwent | 
Peredur Owen Griffiths | 
1,722 | 
5.7 | 
4
 | 
| Bridgend | 
Leanne Lewis | 
2,013 | 
4.8 | 
4
 | 
| Caerphilly | 
Lindsay Whittle | 
6,424 | 
16.0 | 
3
 | 
| Cardiff North | 
Rhys Taylor | 
3,580 | 
6.8 | 
3
 | 
| Cardiff South and Penarth | 
Nasir Adam | 
2,386 | 
4.7 | 
4
 | 
| Cardiff West | 
Boyd Clack | 
3,864 | 
8.4 | 
3
 | 
| Carmarthen East and Dinefwr | 
Jonathan Edwards | 
15,939 | 
38.9 | 
1
 | 
| Carmarthen West and South Pembrokeshire | 
Rhys Thomas | 
3,633 | 
8.6 | 
3
 | 
| Ceredigion | 
Ben Lake | 
15,208 | 
37.9 | 
1
 | 
| Clwyd South | 
Christopher Allen | 
2,137 | 
5.9 | 
3
 | 
| Clwyd West | 
Elfed Williams | 
3,907 | 
9.7 | 
3
 | 
| Cynon Valley | 
Geraint Benney | 
2,562 | 
8.5 | 
4
 | 
| Delyn | 
Paul Rowlinson | 
1,406 | 
3.7 | 
5
 | 
| Dwyfor Meirionydd | 
Liz Saville-Roberts | 
14,447 | 
48.3 | 
1
 | 
| Gower | 
John Davies | 
2,288 | 
5.1 | 
3
 | 
| Islwyn | 
Zoe Hammond | 
2,287 | 
6.7 | 
4
 | 
| Llanelli | 
Mari Arthur | 
7,048 | 
18.4 | 
3
 | 
| Merthyr Tydfil and Rhymney | 
Mark Evans | 
2,449 | 
7.6 | 
4
 | 
| Monmouth | 
Hugh Kocan | 
1,182 | 
2.4 | 
5
 | 
| Neath | 
Daniel Williams | 
4,495 | 
12.2 | 
3
 | 
| Newport East | 
Cameron Wixcey | 
872 | 
2.4 | 
5
 | 
| Newport West | 
Morgan Bowler-Brown | 
1,187 | 
2.7 | 
5
 | 
| Ogmore | 
Luke Fletcher | 
2,919 | 
8.3 | 
4
 | 
| Pontypridd | 
Fflur Elin | 
4,990 | 
12.8 | 
3
 | 
| Preseli Pembrokeshire | 
Cris Tomos | 
2,776 | 
6.5 | 
3
 | 
| Rhondda | 
Branwen Cennard | 
4,069 | 
13.7 | 
3
 | 
| Swansea East | 
Geraint Havard | 
1,907 | 
5.7 | 
4
 | 
| Swansea West | 
Gwyn Williams | 
1,984 | 
5.5 | 
4
 | 
| Torfaen | 
Morgan Bowler-Brown | 
1,441 | 
3.9 | 
4
 | 
| Vale of Clwyd | 
Glenn Swingler | 
1,552 | 
4.2 | 
3
 | 
| Wrexham | 
Carrie Harper | 
2,151 | 
6.4 | 
3
 | 
| Ynys Môn | 
Aled ap Dafydd | 
10,418 | 
28.5 | 
3
 | 
| Constituency | 
Candidate | 
Votes | 
% | 
Position
 | 
| Aberafan Maesteg | 
Colin Deere | 
4,719 | 
13.2 | 
3
 | 
| Alyn and Deeside | 
Jack Morris | 
1,938 | 
4.5 | 
5
 | 
| Bangor Aberconwy | 
Catrin Wager | 
9,112 | 
21.9 | 
2
 | 
| Blaenau Gwent and Rhymney | 
Niamh Salkeld | 
3,844 | 
12.8 | 
2
 | 
| Brecon, Radnor and Cwm Tawe | 
Emily Durrant-Munro | 
2,280 | 
4.9 | 
5
 | 
| Bridgend | 
Iolo Caudy | 
3,629 | 
8.8 | 
4
 | 
| Caerfyrddin | 
Ann Davies | 
15,520 | 
34.0 | 
1
 | 
| Caerphilly | 
Lindsay Whittle | 
8,119 | 
21.2 | 
2
 | 
| Cardiff East | 
Cadewyn Skelley | 
3,550 | 
9.1 | 
6
 | 
| Cardiff North | 
Malcolm Phillips | 
4,669 | 
9.8 | 
4
 | 
| Cardiff South and Penarth | 
withdrew support from their nominated candidate | 
3,227 | 
8.2 | 
5
 | 
| Cardiff West | 
Kiera Marshall | 
9,423 | 
21.1 | 
2
 | 
| Ceredigion Preseli | 
Ben Lake | 
21,738 | 
46.9 | 
1
 | 
| Clwyd East | 
Paul Penlington | 
3,733 | 
7.8 | 
4
 | 
| Clwyd North | 
Paul Rowlinson | 
3,159 | 
7.6 | 
4
 | 
| Dwyfor Meirionnydd
 | 
Liz Saville Roberts | 
21,788 | 
53.9 | 
1
 | 
| Gower | 
Kieran Pritchard | 
3,942 | 
8.3 | 
4
 | 
| Llanelli
 | 
Rhodri Davies | 
9,511 | 
23.3 | 
3
 | 
| Merthyr Tydfil and Aberdare | 
Francis Whitefoot | 
4,768 | 
13.5 | 
3
 | 
| Mid and South Pembrokeshire | 
Cris Tomos | 
2,962 | 
6.4 | 
4
 | 
| Monmouthshire | 
Ioan Bellin | 
1,273 | 
2.5 | 
6
 | 
| Montgomeryshire and Glyndŵr
 | 
Elwyn Vaughan | 
5,667 | 
13.1 | 
5
 | 
| Neath and Swansea East | 
Andrew Jenkins | 
5,350 | 
13.3 | 
3
 | 
| Newport East
 | 
Jonathan Clark | 
2,239 | 
5.8 | 
4
 | 
| Newport West and Islwyn | 
Brandon Ham | 
3,529 | 
8.4 | 
4
 | 
| Pontypridd
 | 
Wil Rees | 
5,275 | 
13.4 | 
3
 | 
| Rhondda and Ogmore | 
Owen Cutler | 
5,198 | 
14.5 | 
3
 | 
| Swansea West | 
Gwyn Williams | 
4,105 | 
11.5 | 
4
 | 
| Torfaen
 | 
Matthew Jones
 | 
2,571
 | 
7.2
 | 
4
 | 
| Vale of Glamorgan
 | 
Ian Johnson
 | 
3,245
 | 
7.1
 | 
4
 | 
| Wrexham
 | 
Becca Martin
 | 
4,138
 | 
10.2
 | 
4
 | 
| Ynys Môn
 | 
Llinos Medi
 | 
10,590
 | 
32.5
 | 
1
 | 
References
- 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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 | 
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 | Leaders |  | 
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 Senedd Group Leaders party leader since 2006 |  | 
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 Presidents party leader pre-2003 abolished 2013 |  | 
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 Vice-Presidents abolished 2013 |  | 
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 | Chairs |  | 
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 | Honorary Presidents |  | 
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 | Leadership elections |  | 
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  | 
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Organisation  | 
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 | History | | Founders | Byddin Ymreolwyr Cymru (Welsh Home Rule Army) |  | 
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 Y Mudiad Cymreig (Welsh Movement) |  | 
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 | Others |  | 
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 | Related organisations |  | 
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 | International affiliations |  | 
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  Category | 
 
Election results by political party in the United Kingdom  | 
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| Great Britain |  | 
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| Northern Ireland |  | 
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Template:Election results in the United Kingdom  |