Support for the Labour Party in Wales from 1900 onwards could have only been at the expense of the Liberal Party in Wales. As the working class in South Wales became more politicised, so the Labour Party prospered. Miners and steel workers formed the backbone of support for the Labour Party between 1900 and 1979 and South Wales became a heartland of Labour support.

 

1900: 9,598 votes; 1 MP elected

 

1906: 11,865 votes; 1 MP elected

 

1910 (Jan): 60,496 votes; 5 MP’s elected

 

1910 (Dec): 47,027 votes; 5 MP’s elected

 

1918: 163,055 votes; 9 MP’s elected

 

1922: 363,568 votes; 18 MP’s elected

 

1923: 355,172 votes; 19 MP’s elected

 

1924: 320,397 votes; 16 MP’s elected

 

1929: 577,554 votes; 25 MP’s elected

 

1931: 479,547 votes; 16 MP’s elected~

 

1935: 395,830 votes; 18 MP’s elected~

 

1945: 779,184 votes; 25 MP’s elected

 

1950: 887,984 votes; 27 MP’s elected

 

1951: 925,848 votes; 27 MP’s elected

 

1955: 825,690 votes; 27 MP’s elected

 

1959: 841,450 votes; 27 MP’s elected

 

1964: 837,022 votes; 28 MP’s elected

 

1966: 863,692 votes; 32 MP’s elected

 

1970: 781,941 votes; 27 MP’s elected

 

1974 (Feb): 745,547 votes; 24 MP’s elected

 

1974 (Oct): 761,447 votes; 23 MP’s elected

 

1979: 795,493 votes; 22 MP’s elected

 

~ = Excludes votes for National Labour in Wales

 

Elections 1832 to 1979