A South Australian man charged with stalking Liberal federal election candidate Georgina Downer claims he was exercising his right to free political communication.
Paul Roy Bunney appeared before Mount Barker Magistrates Court on Thursday, where his lawyer reiterated the charge would be contested.
"The defence, under the High Court authority of Lange and ABC, is the implied freedom of political communication," defence counsel Alex Scott said.
In that case, the court noted the constitution protects freedom of political communication to allow voters to reach a free and informed choice.
Mr Scott said four declarations from three witnesses would be presented at trial.
Magistrate Susan O'Connor continued Bunney's bail to reappear in the court for a pre-trial conference in August, when he will be represented by Grant Algie QC.
The 63-year-old was arrested and charged with stalking while in possession of an offensive weapon in April.
He had worked as a volunteer for Centre Alliance MP Rebekha Sharkie during the recent election campaign in Mayo, but was dumped once the allegations surfaced.
In a statement at the time, Ms Sharkie characterised the allegations as extremely serious.
She went on to retain the SA hills seat with an increased majority, securing 55 per cent of the vote on a two-party basis.
It was Ms Downer's second loss in her bid to win the seat once held by her father after Ms Sharkie also defeated her in a byelection last year.