Compiled by EveryElectionResult.com's data team · Last updated 2026-08-30
Rhondda West was won by Labour at the 1970 general election, with a majority of 15,251 votes over Plaid Cymru. This page covers every general election in Rhondda West from 1918 to 1970.
Full Election History, 1918–1970
Election
Elected
Votes
Vote Share
Runner-up
Majority
Turnout
1918
William Abraham (Labour)
Elected unopposed — no other candidate stood, no vote count on record
0.0%
1922
William John (Labour)
18,001
62.1%
Gwilym Rowlands (Unionist)
7,011 (24.2 pts)
83.7%
1923
William John Tout (Labour)
18,206
65.4%
John Robert Jones (Liberal)
8,566 (30.8 pts)
78.5%
1924
William John (Labour)
Elected unopposed — no other candidate stood, no vote count on record
0.0%
1929
William John (Labour)
23,238
65.1%
Goronwy Moelwyn Hughes (Liberal)
13,991 (39.2 pts)
86.7%
1931
William John (Labour)
23,024
84.3%
John Leigh Davies (Communist)
18,728 (68.5 pts)
66.7%
1935
William John (Labour)
Elected unopposed — no other candidate stood, no vote count on record
0.0%
1945
William John (Labour)
Elected unopposed — no other candidate stood, no vote count on record
0.0%
1950
Iorwerth Rhys Thomas (Labour)
27,150
82.4%
James Patrick Driscoll (Conservative)
23,518 (71.3 pts)
87.9%
1951
Iorwerth Rhys Thomas (Labour)
26,123
81.1%
Emrys Simons (Conservative)
22,488 (69.8 pts)
86.4%
1955
Iorwerth Rhys Thomas (Labour)
21,288
73.8%
Glyndwr Powell James (Plaid Cymru)
16,864 (58.5 pts)
80.3%
1959
Iorwerth Rhys Thomas (Labour)
21,130
72.0%
Glyndwr Powell James (Plaid Cymru)
16,152 (55.0 pts)
85.2%
1964
Iorwerth Rhys Thomas (Labour)
20,713
79.3%
Norman Lloyd-Edwards (Conservative)
17,959 (68.7 pts)
80.7%
1966
Iorwerth Thomas (Labour)
19,060
76.1%
Henry Davies (Plaid Cymru)
16,888 (67.4 pts)
80.3%
1970
Trevor Jones (Labour)
18,779
74.8%
Henry Davies (Plaid Cymru)
15,251 (60.7 pts)
81.5%
Full Result Breakdown by Election
1918
Candidate
Party
Votes
Share
Elected
William Abraham
Labour
Unopposed
Yes
1922
Candidate
Party
Votes
Share
Elected
William John
Labour
18,001
62.1%
Yes
Gwilym Rowlands
Unionist
10,990
37.9%
No
1923
Candidate
Party
Votes
Share
Elected
William John Tout
Labour
18,206
65.4%
Yes
John Robert Jones
Liberal
9,640
34.6%
No
1924
Candidate
Party
Votes
Share
Elected
William John
Labour
Unopposed
Yes
1929
Candidate
Party
Votes
Share
Elected
William John
Labour
23,238
65.1%
Yes
Goronwy Moelwyn Hughes
Liberal
9,247
25.9%
No
Wilfred Augustus Prichard
Unionist
3,210
9.0%
No
1931
Candidate
Party
Votes
Share
Elected
William John
Labour
23,024
84.3%
Yes
John Leigh Davies
Communist
4,296
15.7%
No
1935
Candidate
Party
Votes
Share
Elected
William John
Labour
Unopposed
Yes
1945
Candidate
Party
Votes
Share
Elected
William John
Labour
Unopposed
Yes
1950
Candidate
Party
Votes
Share
Elected
Iorwerth Rhys Thomas
Labour
27,150
82.4%
Yes
James Patrick Driscoll
Conservative
3,632
11.0%
No
James Kitchener Davies
Plaid Cymru
2,183
6.6%
No
1951
Candidate
Party
Votes
Share
Elected
Iorwerth Rhys Thomas
Labour
26,123
81.1%
Yes
Emrys Simons
Conservative
3,635
11.3%
No
James Kitchener Davies
Plaid Cymru
2,467
7.7%
No
1955
Candidate
Party
Votes
Share
Elected
Iorwerth Rhys Thomas
Labour
21,288
73.8%
Yes
Glyndwr Powell James
Plaid Cymru
4,424
15.3%
No
Charles Burke
Conservative
3,134
10.9%
No
1959
Candidate
Party
Votes
Share
Elected
Iorwerth Rhys Thomas
Labour
21,130
72.0%
Yes
Glyndwr Powell James
Plaid Cymru
4,978
17.0%
No
Franis Leslie Pym
Conservative
3,242
11.0%
No
1964
Candidate
Party
Votes
Share
Elected
Iorwerth Rhys Thomas
Labour
20,713
79.3%
Yes
Norman Lloyd-Edwards
Conservative
2,754
10.5%
No
Henry Victor Davies
Plaid Cymru
2,668
10.2%
No
1966
Candidate
Party
Votes
Share
Elected
Iorwerth Thomas
Labour
19,060
76.1%
Yes
Henry Davies
Plaid Cymru
2,172
8.7%
No
Bryan Sandford-Hill
Conservative
1,955
7.8%
No
Arthur True
Communist
1,853
7.4%
No
1970
Candidate
Party
Votes
Share
Elected
Trevor Jones
Labour
18,779
74.8%
Yes
Henry Davies
Plaid Cymru
3,528
14.0%
No
John Dilwyn Morgan
Conservative
1,610
6.4%
No
Arthur True
Communist
1,201
4.8%
No
Margin Over Time
Winning margin (percentage points) at each election, coloured by the winning party.
Trend
Rhondda West has been contested at 15 general elections on record since 1918. Parties that have won a seat here over that span: Labour.
Frequently Asked Questions
Who won Rhondda West in the 1970 general election?
Labour won Rhondda West in 1970 with 18,779 votes (74.8%), a majority of 15,251 votes over Plaid Cymru in second place.
Which parties have won Rhondda West since 1918?
Since 1918, Rhondda West has been won by: Labour.
What was the closest result in Rhondda West?
The closest result on record for Rhondda West was 1922, when Labour beat Unionist by just 7,011 votes (24.2 percentage points).