AN official complaint was lodged after a West Sunshine Community Centre manager pulled down two Liberal Party posters on election day.

A neutral witness has told the Advocate he was "blown away" by what occurred.

Liberal Party membership officer David Brown, who was also at the Kermeen Street location on August 21, claimed the manager stormed out of the hall where polling booths were located and started tearing down the posters that were placed next to posters of other parties.

He claimed the manager told him the content of the advertisement - which accused the Labor government of plunging Australia into debt at a rate of $100million a day - was not the right "tone" for the hall. "We were busy handing out how-to-vote cards when she walked along and started ripping the posters down - just ours," Mr Brown said.

"I think she's taken her political views and decided she didn't like it and acted accordingly.

"It is very disappointing; it's not what I would expect from someone who should be neutral in this kind of thing."

Former Brimbank councillor and Greens supporter Myles Dymott, who also witnessed the incident, said he had never seen such behaviour during the 10 years he had been involved in politics.

"It doesn't reflect well on council, particularly given recent events of sacked councillors," Mr Dymott said.

"I'm not a big fan of the Liberal Party, but from the democratic perspective I was blown away by what happened."

Australian Electoral Commission public awareness manager Claire Lapworth confirmed a complaint had been lodged by the Liberal Party.

She said the AEC investigated the issue on the day and briefed all party workers. "Everyone was in agreement that it was sufficiently investigated," Ms Lapworth said.

"The manager offered the poster back to the Liberal Party to do what they wanted with it and it's not the AEC's position to be putting posters up or down for the political parties."

Brimbank Council's community wellbeing general manager, Kelly Grigsby, said it was the first time the centre had been used as a voting venue, and council staff had dealt with the issue.

"There was confusion on the day as to the size of promotional material that is permissible on a council facility."

Ms Grigsby said the member had apologised to AEC and Liberal representatives.