The Parliamentary Reform Act 1832 required the publication on a parish basis of lists of persons eligible to vote. As the franchise has been gradually extended, so the lists have become more comprehensive. Since 1928 (when the age that women were allowed to vote was lowered to 21) they list the names and addresses of all adults who have registered. Copies may be seen at county and borough record offices and public libraries. They are an important 20th‐century source for family historians.