Original sentence: Blackwood distanced herself from the anti-Harris campaigners saying that she had a 'positive message'.Blackwood won Oxford West and Abingdon in the 2010 general election by 176 votes on a 6.9% Liberal Democrat-Conservative swing 1.9% higher than the national average.Following Blackwood's victory, Harris asserted that the attacks played a part in his defeat.The campaign became 'bitter' in the last two weeks,  when pamphlets were distributed by Keith Mann, an animal rights activist who objected to Harris' support for animal rights testing, and Reverend Lynda Rose, who produced a leaflet  describing Harris as 'Dr.The consituency was subjected to boundary changes based on the recommendation of the 2006 UK Boundary Commission report, however according to the BBC, these changes had little impact, and the change between actual 2005 result and notional result with the new boundary lines was just 0.2%
Edited sentence: Blackwood distanced herself from the anti-Harris campaigners saying that she had a 'positive message', while Harris himself said that they played a part in his defeat.Blackwood won Oxford West and Abingdon in the 2010 general election by 176 votes on a 6.9% Liberal Democrat-Conservative swing, following a 'bitter'  campaign from Keith Mann, an animal rights activist who objected to Harris' support for animal rights testing, and Reverend Lynda Rose, who produced a leaflet  describing Harris as 'Dr.Boundary changes reduced the notional majority, with 8,000 students moved to the Oxford East constituency and more rural voters added