It was worse in 1931
Colin Kidd: Clement Attlee, 17 November 2016
“... calamity beside which another low moment in Labour’s history – the election of 1983, when Michael Foot’s Labour Party was reduced to 209 seats – seems a minor triumph. The electoral massacre of 1931 was the making of Attlee. In the cull of Labour’s big beasts, Ernest Bevin, Arthur Henderson and Herbert Morrison all failed to win seats, but ... ”