Paul Kelly will join the panel of Q&A on Monday after two guests cancelled within hours of each other.
The Australian's Editor at Large will join Labor's Tanya Plibersek and other guests after Nick Cater and Alan Tudge cancelled.
Mr Cater, the Menzies Research Centre executive director, reportedly sent a letter outlining his concerns in the wake of last week’s controversial episode.
It comes just hours after Mr Tudge, the Prime Minister's parliamentary secretary, pulled out stating that it would be inappropriate to take part while an investigation into the ABC was ongoing.
Writing for News Ltd under the headline "Free speech does not mean a media platform", Mr Tudge said that his last minute withdrawal from Monday’s episode does not mean he will not attend the show in the future.
“I am concerned my participation could be construed as suggesting the prime minister and government are not taking the matters from last week incredibly seriously,” he said.
“We are.”
Mr Tudge repeated criticism of the public broadcaster for allowing former terror suspect Zaky Mallah to take part in last week’s program, where he said that views held by some in the federal government were giving many Australians cause to join Islamic State militants.
Mr Mallah’s comments sparked backlash from the Coalition, which has launched a review into the weekly program.
'When Abbott asked ‘whose side is the ABC on?’, it was a legitimate question'
Mr Tudge said the review would ultimately “require a desire from the ABC to change”.
“The government does not have any powers over editorial decisions, nor would we want to,” he said.
“But it can make recommendations… When Abbott asked ‘whose side is the ABC on?’, it was a legitimate question.”
Mr Tudge is the second Liberal MP to snub the public broadcaster, after Defence Minister Kevin Andrews said he would boycott Q&A.
Comment has been sought from the Prime Minister, as well as Deputy Opposition Leader Tanya Plibersek, who is due to appear on the program on Monday.
Further comment has also been sought form the ABC, which last week conceded that “the Q&A program made an error in judgement in allowing Zaky Mallah to join the audience and ask a question”.
