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The area had been part of the former two-seat Tower Hamlets constituency, which was divided at the 1885 general election.
The constituency was marginal before 1918. The party holding the seat changed in 1886, 1892, 1895, 1906, January 1910, December 1910 and 1912. After the extension of the franchise to all adult men and some women in 1918, the seat became a safe Labour seat from 1922.
George Lansbury was first elected in December 1910 as a Labour candidate. He was on the left-wing of the party and was known as a pacifist and supporter of votes for women. In November 1912, Lansbury resigned his seat so he could test public opinion on women's suffrage. He lost the subsequent by-election and did not regain the seat until 1922.
In 1889 the Tower division of Middlesex was severed from the county. It became part of the County of London. In 1900 the lower tier of local government in London was re-modelled. Bow and Bromley became part of the Metropolitan Borough of Poplar.
When a re-distribution of parliamentary seats took place in 1918, the constituency became a division of Poplar. It comprised the wards of Bow Central, Bow North, Bow South, Bow West, Bromley North East, Bromley North West, and Bromley South West.