Social Democratic Federation election results

This article lists the Social Democratic Federation's election results in UK parliamentary elections. It also includes the results of its successor, the British Socialist Party.

1900 general election
For the 1900 general election, the Social Democratic Federation stood candidates as part of the Labour Representation Committee.

By-elections, 1910–1918
The Social Democratic Party merged into the British Socialist Party in 1911. Hartley was endorsed by the Labour Party.

1918 general election
All candidates other than Arnall, Hirst and Murray stood for the Labour Party. Hirst stood for the Co-operative Party.