sentences:  The County Borough of Bournemouth wards of Boscombe East, Boscombe West, King's Park, Queen's Park, Southbourne, and West Southbourne, and the Borough of Christchurch.Before 1918 the County Borough of Bournemouth formed part of the then parliamentary borough of Christchurch.Under the Representation of the People Act 1918, Bournemouth became a single-member constituency, with the same boundaries as the then county borough.