UK Polling History: Election of 13 April 1972 – Merthyr Tydfil
Result summary
| Parties | |||||
| Labour | Plaid Cymru |
Conservative | Others | Liberal | |
| Votes | 15,562 | 11,852 | 2,336 | 1,519 | 765 |
| Votes gained | +6,328 | +8,776 | -833 | – | – |
| Share of votes | 48.6% | 37.0% | 7.3% | 4.7% | 2.4% |
| Share of eligible voters | 37.7% | 28.7% | 5.7% | 3.7% | 1.9% |
| Gain in share of votes | +19.9% | +27.4% | -2.6% | – | – |
| Gain in share of eligible voters | +15.3% | +21.2% | -2.0% | – | – |
| Total votes: | 32,034 | |
| Electorate: | 41,299 | (estimated) |
| Turnout: | 77.6% | |
| Outcome: | Labour gain | |
| Swing: | 15.0% | Plaid Cymru from Conservative |
Polling history
List of contests
| « |
Constituency formed from Merthyr 23 February 1950 |
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Constituency succeeded by Merthyr Tydfil and Rhymney 9 June 1983 |
» |
| Date | Type | Parties | ||||||
| Labour | Conservative | Plaid Cymru |
Independent Labour |
Other | Liberal | Others | ||
| Date | Type | Parties | ||||||
| Labour | Conservative | Plaid Cymru |
Independent Labour |
Other | Liberal | Others | ||
| 3 May 1979 | General Election | 22,386 | 4,426 | 2,962 | 337 | 1,275 | 0 | |
| 10 October 1974 | General Election | 21,260 | 2,587 | 4,445 | 509 | 1,300 | 0 | |
| 28 February 1974 | General Election | 20,486 | 2,622 | 7,336 | 529 | 1,002 | 0 | |
| 13 April 1972 | By Election | 15,562 | 2,336 | 11,852 | 765 | 1,519 | ||
| 18 June 1970 | General Election | 9,234 | 3,169 | 3,076 | 16,701 | 0 | ||
| 31 March 1966 | General Election | 21,737 | 4,082 | 3,361 | 0 | |||
| 15 October 1964 | General Election | 23,275 | 4,767 | 2,878 | 0 | |||
| 8 October 1959 | General Election | 26,608 | 7,885 | 0 | ||||
| 26 May 1955 | General Election | 25,630 | 7,548 | 0 | ||||
| 25 October 1951 | General Election | 7,405 | 28,841 | 0 | ||||
| 23 February 1950 | General Election | 29,210 | 6,294 | 1,571 | 0 | |||