A Liberal candidate in the battle for one of the government’s must-win Sydney seats says she was grabbed and physically harassed at a pre-polling station in Ashfield.

Child psychologist Dr Fiona Martin is running for the Western Sydney seat of Reid, which is held by former minister Craig Laundy on a margin of less than 5 per cent.

However, Laundy announced his retirement before the election with Martin taking up the fight in March.

The Liberal candidate said she would not be deterred from continuing her campaign but she does want to see the police take action.

“That it's followed up and that anyone feels safe when they run for parliament,” the mother-of-four told 7NEWS reporter Sean Berry.

“I was shaken up by it yeah, absolutely.

Reid Liberal candidate Dr Fiona Martin with the man she is hoping to replace Craig Laund (right) and Prime Minister Scott Morrison. Credit: Mick Tsikas / AAP

"It's not a boxing ring. It's not a place for physical bullying," Martin said.

Martin gave a statement to Auburn police on Monday and says she won't tolerate bullying.

"I just think in 2019 we should feel safe whether we're male or female to be at a pre-polling booth and not have our space physically violated," she said.

NSW Police told 7NEWS.com.au officers had taken a statement and were investigating the matter.