Original sentence: Even more than other similar seats in South London (such as Croydon North, Dulwich, Lewisham East and West), Streatham has swung extremely heavily against the Conservative Party over the past fifteen years.Having lost Streatham in 1992, the Conservatives were beaten narrowly into third place by the Liberal Democrats in 2001, and in 2005 fell into an even more distant third place, with the Lib Dems achieving a 10% swing from Labour to make the seat the site of a genuine contest with the Liberal Democrats at the next general election.Redrawn constituency boundaries are also expected to make the constituency less safe for Labour
Edited sentence: A further swing of 8.9% from the notional result on the new boundaries to the Liberal Democrats would be needed for the seat to change hands again.Even more than other similar seats in South London (such as Croydon North, Dulwich, Lewisham East and West), Streatham has swung extremely heavily against the Conservative Party since the 1980s.Having lost Streatham in 1992, the Conservatives were beaten narrowly into third place by the Liberal Democrats in 2001, and in 2005 fell into an even more distant third place, with the Lib Dems achieving a 10% swing from Labour.Redrawn constituency boundaries are expected to make the constituency marginally less safe for Labour