Division of Parramatta
The division lies between Labor voting areas of western Sydney and the  Liberal areas on the North Shore.  Because of this, any change to the boundary can change the political balance in the seat.  For example, in the 2006 boundary change, Parramatta shifted from marginally Labor to marginally Liberal (as defined by the Australian Electoral Commission). Nevertheless, as was expected  Julie Owens held the seat for the ALP with an increased majority.