Original sentence: A changing demographic towards the eastern side of the electorate (Glenwood, Stanhope Gardens, Kellyville Ridge, Rouse Hill) may push the Labor seat to a Liberal one.In the 2007 election the Liberal majority increased by 9.6% but Labor retained  the seat with a substantially reduced margin
Edited sentence: A changing demographic towards the eastern side of the electorate (Glenwood, Stanhope Gardens, Kellyville Ridge, Rouse Hill) and the performance of John Aquilina may push the Labor seat to a Liberal one.In the 2007 election the Liberal majority has increased by 9.6, but Labor still won the seat, with a substantially reduced margin