"The result today is on us, the Liberals, not on Dave Sharma", he said.
Phelps' lead of more than 54 percent under Australia's voting system - which allocates voters' second preferences if no candidate secures a majority - shrank Sunday to just over 50.61 percent, or 884 votes over her Liberal rival.
"I was in touch with him regularly through the campaign and, look, whatever he was willing to provide was helpful", Mr Sharma told Sky News.
Prime Minister Scott Morrison was in touch with Phelps on Sunday. "I will be honest about it: those approaches were made, they were even made by Dave himself", he said.
On Sunday, Phelps managed to extend her lead to about 1600 votes.
"I want to make something really clear".
Phelps said she plans to bring a strong, steady and responsible approach to parliament and use her influence as an independent in a hung parliament to ensure legislation is as good as it can be.
Speaking to reporters, Ms. Phelps declined to say how she might vote should a no-confidence motion be moved in Parliament against the government, but indicated she wants the government to run its full term, which expires next May.
It marks the first time in over 100 years that the Liberal Party has lost Wentworth, an electorate in the affluent eastern suburbs of Sydney, and the 22 percent voter swing against the party was the biggest by-election swing against a government in Australian history.
Labor did not capitalise on the Liberal Party vote collapse: one hour after polls closed, the Greens' Dominic Wy Kanak was besting the opposition party's Tim Murray on the primary vote.
"Now, I don't see how he can argue that and not then say that we have to have an election".
"Liberals are angry and they've expressed that", Morrison said.
"The event of two months ago angered and outraged many Liberals and particularly those in the seat of Wentworth".
The likely result in Wentworth has been seen as a major backlash from the public against the government, after the country's fourth change of prime minister in eight years via an internal party vote.
"I just felt so strongly this time and I actually felt I had the ability to stand up and go 'enough is enough, '" Phelps told Studio 10 on Monday.
Bob Katter has put pressure on other crossbenchers to avoid an early election.
Sharkie, who had guaranteed the government confidence until after the byelection, said she wanted to hear how Morrison was going to deal with the children on Nauru. Mr Turnbull did not publicly refute his son's comments.
"It had a high personal following there for Malcolm Turnbull".
When Malcolm Turnbull resigned from parliament, he left his seat vacant, reducing the number of MPs in the House to 149.
"These events of several months ago, I think - I know - would have been personally very hard [for Mr Turnbull] to deal with". But this is a big hit for them.
"That will continue to be the case", Mr Wilkie said.
"Every MP on the government's side now, and on the crossbench, becomes a kingmaker". Turnbull quit Parliament after being ousted from the leadership in a Liberal Party backroom coup in August.