Josh Frydenberg has rejected calls to recontest his former seat by displacing the chosen female candidate, saying his position on the next election "remains unchanged".
The former treasurer ended speculation on a return to politics after draft redistribution changes shifted the margins of his old electorate, making Kooyong more winnable for the Liberals.
"Re the recent speculation about Kooyong: I am not rushing back to politics, my position on contesting the next election remains unchanged," he wrote on X.
"I will continue to support the Liberal Party and our local candidate Amelia Hamer."
Ms Hamer, 31, was pre-selected for the Melbourne seat in late March.
The Liberal Party is already under scrutiny for its lack of female parliamentarians.
Opposition finance spokeswoman Jane Hume had earlier talked down rumours of re-opening pre-selections based on draft boundary changes.
"It would be a crazy thing to do," she told Sky News on Monday.
"I know that there's lots of people out there that would love to see Josh's return, but Josh is a great supporter of women in Parliament, always has been, and I know he's doing right by Amelia Hamer."
But former cabinet colleague Karen Andrews maintains the ex-treasurer should resurrect his political career.
"He would be an absolute asset to the team we take forward to the next election," she told ABC radio.
"(The Liberal Party) should do all they can to attract him back into our parliament and clearly if that means re-opening pre-selections then that has to be considered."
The Liberal Party's post election review found it had its lowest female representation in the new parliament in 30 years.
A number of Liberal parliamentarians have called for an increase in women being pre-selected.
Though the government has not announced an official date for the federal election, Australians will have to go to the polls by May 2025.
Ms Hamer has not directly addressed the rumours but on Sunday night made a post about a local Kooyong woman who had won gold at the OWF International Elite Tournament.
"Here in Kooyong, the community loves to support strong women," she said.
Nationals leader David Littleproud said the party needed to pick the best candidate with the greatest shot of winning the seat.
"We don't believe in quotas, we believe you get there on on effort and on merit and who is the best person to win that seat whether they be male or female," he said
