FamilySearch adds England, London Electoral Registers, 1847-1913

These  electoral registers, from originals at the London Metropolitan Archives, are lists of names and addresses of registered voters.
These registers are a great way to follow movement of voters and coming of age of males in the family, voting for women started after the First World War so this won't help find them directly.
The collection is incomplete. To avoid wasting time I suggest checking the browse at https://familysearch.org/search/image/index#uri=https://familysearch.org/recapi/sord/collection/2228170/waypoints which lists the communities covered. Then click on the community of interest, if you know it! For instance, for Tottenham only the years 1869 to 1877 are available.
If you have access to Ancestry check out the database London, England, Electoral Registers, 1832-1965. Coverage is also patchy, much is for later times, after the First World War.