The seat of Lindsay is a Western Sydney electorate, based around Penrith at the foot of the Blue Mountains. It reaches from Castlereagh in the north to Mulgoa in the south, and from Colyton in the east to Emu Heights in the west.

After the last federal election, the Australian Electoral Commission redrew the boundaries of Lindsay, excluding suburbs in the Lower Blue Mountains by moving them into the neighbouring seat of Macquarie, and taking in St Marys and surrounding suburbs of Colyton, Oxley Park and North St Marys.

Click here to see an Electorate Map of Lindsay

 
Lindsay now includes the suburbs of:
•    Cambridge Gardens
•    Cambridge Park
•    Castlereagh (part)
•    Claremont Meadows
•    Colyton
•    Cranebrook
•    Emu Heights
•    Emu Plains
•    Glenmore Park
•    Jamisontown
•    Kingswood
•    Leonay
•    Llandilo (part)
•    Luddenham (part)
•    Mulgoa
•    North St Marys
•    Orchard Hills
•    Oxley Park
•    Penrith
•    Regentville
•    St Marys
•    Werrington
•    Werrington County
•    Werrington Downs

In total, Lindsay is home to more than 87,000 voters, and covers an area of 269 square kilometres.

Retiring Liberal MP Jackie Kelly has held the seat since 1996.