A man has been charged after a Liberal Party volunteer was stabbed with a corkscrew in former prime minister Tony Abbott's seat of Warringah on Friday night.
A number of volunteers were putting up campaign posters outside Balgowlah Heights Public School about 8:00pm when a man began yelling abuse at them, police said.
"He allegedly threatened an 18-year-old man before he thrust a corkscrew at the stomach of a 31-year-old man causing a minor injury," NSW police said in a statement.
"He then started ripping down the banners that had been erected, before fleeing the scene."
Labor has accused the Liberal Party of deliberately using the official colours of the Australian Electoral Commission to mislead Chinese-speaking voters in a marginal seat, despite the AEC stating the posters are within the laws.
The posters, which were written in Mandarin and have appeared at booths in the Melbourne seat of Chisholm, state the "correct" way to vote is to preference the Liberal candidate first.
One poster seen by the ABC at the Burwood East Primary School polling booth was printed in the purple and white colours of the AEC and tied to a fence next to an official AEC voting banner.
The text of the poster appears to be written in the style of an official instruction to voters:
Quote:"Correct way to vote.
"On the green voting card, put preference 1 next to the Liberal Party. The other boxes can be numbered from smallest to highest."
Australian Labor Party state secretary Kosmos Samaras has confirmed to the ABC that the party lodged a formal complaint with the AEC.