"I'll give you my solid, rolled-gold guarantee here that come tomorrow, come Friday, Barnaby Joyce will be leading the National party", she told Sky News.
AAP understands a group of about four or five Nationals MPs are trying to get Mr Joyce to resign, but they don't have the numbers in the 21-member party room to force a change.
CANBERRA, Australia Australia's deputy prime minister was under mounting pressure Wednesday to resign as his party's leader over revelations of a relationship with a former staffer.
However shadow treasurer Chris Bowen asked Mr Joyce whether he could advise first-home buyers "how they, too, can get a rent-free home in Armidale from their mates".
I find the way that Mr Joyce has treated his family and set the lowest of examples to the men of our nation makes his position untenable.
Barnaby Joyce is fighting to keep his grip on the National party leadership.
"The party will probably talk to him and discuss the future of Barnaby and the future of the. party", O'Dowd told reporters.
Nationals president Larry Anthony was in Canberra to deal with what he called a "very hard time" for the party.
But Nationals Cabinet member David Littleproud demanded Mr Joyce's critics should "put up or shut up".
In a statement yesterday, Mr Joyce confirmed the pair were now in a relationship "without a shadow of doubt", however he vehemently denied they were a couple while Ms Campion worked for Mr Cavanan, making it unnecessary for Mr Joyce to notify Prime Minister Malcolm Turnbull, as per ministerial codes.
How Ken O'Dowd fits in to the Joyce saga
Mr Joyce has denied breaching the ministerial code of conduct.
She was then transferred to work with another Nationals MP Damian Drumm, before eventually leaving the Nationals.
However, she said her understanding was the usual arrangements would apply next week.
That was reflected in the ReachTEL poll: asked who should replace Mr Joyce if he resigned, 16 per cent backed Senator McKenzie, 14 per cent wanted Resources Minister Matthew Canavan and 9.5 per cent chose Veterans' Affairs Minister Michael McCormack.
"I think we need to focus on the jobs or regional and rural Australians and leave Barnaby Joyce's personal life to exactly that, his personal life", Mr Littleproud said.
Mr Joyce is due to be acting prime minister next week when Malcolm Turnbull travels to the United States.
The deputy Liberal leader and foreign minister, Julie Bishop, signalled on Wednesday morning she would be available to act in that role should "circumstances change".
"I heard there is going to be someone who goes across to see him", he said yesterday morning.
"It is stressful, marriage break-ups are very stressful things to go through and I think he is here to stay".