The mining areas in the north of the constituency, including the lower reaches of the Rhondda, and the cosmopolitan town of Barry were strongly Liberal but these were juxtaposed against the conservatism of the Vale of Glamorgan and the genteel settlements of Penarth and Llandaff.
The mining districts in the northern area of the constituency, including the lower Rhondda, and the urban town of Barry were characterized by Liberal leanings, which stood out against the more conservative areas of the Vale of Glamorgan and the affluent communities of Penarth and Llandaff.