The collection consists of:
- 88 archive boxes of General Election addresses, 1935-present. Also 32 bound volumes of General Election addresses from 1892-1931.
- 18 archive boxes of other election addresses, including London County Council elections, 1889-1913, By-Elections, 1905-1920 (with sporadic collection post-1920), European Parliament Elections, 1979-1999, Scottish Parliament Elections, 1999, and Welsh Assembly Elections, 1999.
- 6 archive boxes of manifestoes, from 1900-present, detailing most political parties, as well as European manifestoes.
- Lists of candidates, 1906-1992, including European Parliament candidates.