Boundary set for Wales (7 May 1955 - 8 February 1974) Establishing legislation

Constituency areas Establishing legislation General elections By-elections Majorities Vote shares of winning candidate Turnouts General election party performance

1. Parliamentary Constituencies (Carmarthenshire) Order 1955
2. Parliamentary Constituencies (Newport and Monmouth) Order 1955
3. Parliamentary Constituencies (Swansea) Order 1955