Wales, 1955 vs 1959: seat-by-seat change
Every constituency in Wales compared between the 1955 and 1959 general elections: which seats changed hands and how far each swung.
| Constituency | 1955 | 1959 | Majority | Con–Lab swing |
|---|---|---|---|---|
| Aberavon | Lab | Lab | 38.2% | −0.5 |
| Aberdare | Lab | Lab | 59.5% | +0.1 |
| Abertillery | Lab | Lab | 70.1% | +0.3 |
| Anglesey | Lab | Lab | 22.2% | −7.3 |
| Barry | Con | Con | 18.6% | −1.5 |
| Bedwellty | Lab | Lab | 63.7% | −0.6 |
| Brecon and Radnor | Lab | Lab | 14.6% | −1.1 |
| Caernarvon | Lab | Lab | 23.1% | −1.5 |
| Caerphilly | Lab | Lab | 54.1% | +1.9 |
| Cardiff North | Con | Con | 21.5% | −1.5 |
| Cardiff South East | Lab | Lab | 1.6% | −2.5 |
| Cardiff West | Lab | Lab | 6.6% | −2.0 |
| Cardigan | Lib | Lib | 30.7% | −3.3 |
| Carmarthen | Lib | Lab gain | 13.6% | −3.7 |
| Conway | Con | Con | 12.0% | +0.2 |
| Denbigh | Con | Con | 10.8% | −1.5 |
| East Flintshire | Lab | Lab | 0.2% | −2.5 |
| Ebbw Vale | Lab | Lab | 62.0% | +1.8 |
| Gower | Lab | Lab | 42.9% | −2.1 |
| Llanelli | Lab | Lab | 47.2% | +0.7 |
| Merioneth | Lab | Lab | 4.4% | +7.6 |
| Merthyr Tydfil | Lab | Lab | 54.3% | −0.1 |
| Monmouth | Con | Con | 14.0% | +0.2 |
| Montgomery | Lib | Lib | 10.7% | −18.3 |
| Neath | Lab | Lab | 47.3% | −2.7 |
| Newport | Lab | Lab | 6.2% | −0.6 |
| Ogmore | Lab | Lab | 49.4% | −0.9 |
| Pembroke | Lab | Lab | 10.2% | −20.7 |
| Pontypool | Lab | Lab | 46.8% | +0.5 |
| Pontypridd | Lab | Lab | 36.5% | −2.9 |
| Rhondda East | Lab | Lab | 50.7% | −3.3 |
| Rhondda West | Lab | Lab | 55.0% | −1.0 |
| Swansea East | Lab | Lab | 45.5% | +0.3 |
| Swansea West | Lab | Con gain | 0.9% | −1.6 |
| West Flintshire | Con | Con | 19.2% | +1.5 |
| Wrexham | Lab | Lab | 24.1% | +0.2 |
Official results House of Commons Library and UK Parliament election results data. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. How we use this data