A former South Australian Labor MP charged with blackmail will argue she has no case to answer.
Annabel Digance, 63, and her businessman husband Greg Digance, 60, who is facing the same allegations, appeared in Adelaide Magistrates Court on Tuesday where they were scheduled to enter pleas.
But counsel for Ms Digance, Robert Cameron, told the court it would be submitted that there was no case to answer and described the prosecution as "malicious".
Counsel for Mr Digance, Jon Lister, said he had only recently been instructed on the matter and asked for an adjournment.
Magistrate Michelle Sutcliffe adjourned the case until November 2.
Ms Digance and her husband were arrested in April at their Strathalbyn home, south of Adelaide, over allegations they tried to blackmail SA Labor leader Peter Malinauskas.
Police said previously it would be alleged the accused were involved in a common enterprise to obtain a personal gain by threatening to make allegations of misconduct by Mr Malinauskas.
It was understood that benefit involved Ms Digance being placed in a winnable spot on the Legislative Council ticket or being preselected for a safe Labor seat prior to the next state election in March 2022.
"It is important to be clear that the allegations did not relate to any form of criminal behaviour by Mr Malinauskas," police said in a statement at the time of the arrest.
"He is not being investigated by SAPOL for any criminal offence and is not suspected of any criminal offence."
The opposition leader first approached police in February last year.
He said previously he never thought he would find himself involved in such circumstances and reported the matter because it was the "right thing to do".
Ms Digance previously served in the SA parliament as the lower house member for Elder from 2014 to 2018 but lost her seat to the Liberals in the 2018 poll.
