Created in 1984, Lindsay has, in every election since, been held by the party of government, making it a key bellweather seat. As a result it is often the site of fierce campaigning.
It was originally a safe Labor seat, but this changed in 1996 when the Liberal's Jackie Kelly won and held the seat until 2007.
Since then, the seat has been held by Labor MP and Assistant Treasurer David Bradbury.
In 2007 it was the site of a controversial Liberal advertising campaign, with supporters distributing a fake leaflet that alleged Labor supported the building of a mosque and leniency for terror suspects.
GEOGRAPHY
Source: ABS
Lindsay is on the outer north-western fringe of Sydney's suburbs. At its heart lies Penrith, but it stretches to Londonderry in the north to Mulgoa in the south.
Key suburbs include Cambridge Park, Castlereagh, Claremont Meadows, Cranebrook, Emu Plains, Glenmore Park, Jamisontown, Kingswood, Oxley Park, Penrith, Regentville, St Marys and Werrington
CONTENDERS
Lindsay is currently held by Labor MP and Assistant Treasurer David Bradbury, pictured right.
The seat will be contested by Liberal candidate Fiona Scott, pictured left, who pulled votes in the 2010 election with a swing of 4.71 per cent.
Both have made pledges to extend a major highway to connect Penrith to Sydney city. Mr Bradbury has announced further policies to protect local bushland and boost jobs via local infrastructure projects. Fiona Scott has pledged to support local businesses.
OTHER CANDIDATES
The Greens: David Lenton.
PEOPLE
Population: 148,983
Median age: 34
Families: 40,192
Average children per family: 1.9
Median weekly household income: $1,347
Nearly 75 per cent of the electorate's population was born in Australia, with over 80 per cent speaking English at home (122,043). This is followed by Indo-Aryan languages (3105) and Arabic (1912).
Most of Lindsay's voters are young, home-owners and families, with a median age of 34 years.
Cost-of-living pressures and the National Broadband Network are key issues in the area, as well as public transport.
IN DEPTH: LINDSAY SUBURB OF PENRITH
