A police task force set up to ensure politicians' and candidates' safety and freedom from harassment has received and assessed 35 complaints.
Operation Wilmot was launched at the start of the election campaign, which is in its third week, involving a team of Australian Federal Police officers and specialists.
An AFP spokesman told AAP on Wednesday of the 35 complaints received, there were 15 ongoing investigations.
So far, one charge has been laid, relating to a man who allegedly threatened to assault an officer in Deputy Prime Minister Barnaby Joyce's security detail.
Pedro De Pakas, 52, of Ebor, appeared in Tamworth Local Court on Tuesday charged with threatening serious harm to a commonwealth law officer.
He has been remanded in custody and did not enter a plea.
The campaign team for Liberal candidate for the Sydney seat of Warringah, Katherine Deves, recently lodged a complaint about death threats against her.
