Two Turnbull Government frontbenchers have brushed off threats from rebel backbenchers who have warned they may abandon the Coalition if it does not embrace conservative principles.

Key points: George Christensen wants Government to "deliver" for conservative voters

George Christensen wants Government to "deliver" for conservative voters Says the Coalition risks losing supporters to parties like One Nation

Says the Coalition risks losing supporters to parties like One Nation MP says concerns shared by Senator Cory Bernardi

Queensland Coalition MP George Christensen has called for the Government to pay more attention to the priorities of conservative voters, warning that if it does not then his position in the party might "no longer be tenable" in the future.

Liberal senator Cory Bernardi has also been a persistent critic of the Turnbull Government, and has warned he may start a new party for voters disenchanted with the Coalition.

But Justice Minister Michael Keenan played down the prospect of a split — insisting the Liberal party was the "home of conservative ideas in Australia".

"We are a conservative Government that brings together those principles, with Liberal principles as well, and do so very successfully," he said.

"If you're interested in those principles and values, then you'll support the Liberal Party."

Government frontbencher Greg Hunt also issued a veiled rebuke to Senator Bernardi and Mr Christensen, arguing they had an obligation to stick with the party which they stood for at the federal election.

"We were all elected on a commitment to our party, to the Australian people, that we'd be there for the life of this parliament as members of this party, and I'm very confident that all of the members will retain that commitment," Mr Hunt said.

'Government needs to be more loyal': Christensen

Mr Christensen has repeatedly agitated for the Coalition to make a concerted effort to win back conservative voters who have deserted mainstream parties and gravitated towards One Nation or Katter's Australia Party.

The Queensland MP said a lot of people had told him to "pull the pin" on the Government and go with another entity, stressing he remained loyal to Deputy Prime Minister Barnaby Joyce, the Nationals and local party members.

But he issued a warning on Facebook, saying he would consider his future in the party if it failed to be "more loyal" to grassroots supporters.

"What the Turnbull Government needs to do is start being more loyal to the voters and the party members who sent us here or there will come a time when remaining inside the tent is no longer tenable to my conscience or my voters," he said.

Mr Christensen said the Coalition needed to be seen as a conservative Government.

"The time is going to have to come to deliver for those people with conservative values in the electorate and to be seen as a conservative Government," Mr Christensen said.

"We can't go on pretending that we're not."

Mr Christensen said his concerns were shared with others in the party, including Senator Bernardi, who established the Australian Conservatives movement earlier this year.

The move sparked speculation the South Australian senator was planning to form a breakaway party, something the Liberal senator denied at the time.

Mr Christensen said Senator Bernardi's future in the party was a matter for him, but believed "at this stage" the South Australian was not intending to leave.

"I don't know that Cory is going anywhere at this stage," he said.

He said both he and Senator Bernardi believed the Coalition should be "unashamed" that it was the major conservative force in Australian politics.

"We are a conservative Government. We should act like a conservative Government," Mr Christensen said.

"If that means being stronger on issues of national security, if it means taking a stance on some of the issues that we're seeing Pauline Hanson being used as a lightning rod for, then we should do those things."

'They get leverage by threatening to go': MP

Former prime minister Tony Abbott has also weighed into the debate on Twitter, warning the Liberal party "cannot take the base for granted" if it wants to remain strong and cohesive.

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The Federal Opposition has pounced on the display of disunity.

"What this does underline is Malcolm Turnbull's weakness. If he was a leader with authority, a leader with control of his own party, you wouldn't see Cory out there, or George Christensen out there, talking about splitting," Labor frontbencher Penny Wong said.

"What that weakness means is a divided Government at a time when we have challenging issues facing us, a Government divided and fighting amongst itself."

Meanwhile, former Victorian premier Jeff Kennett lashed out at Senator Bernardi, saying the South Australian politician would be unrecognisable in his own state, let alone in Brisbane, Sydney or Melbourne, if he started his own political party.

"He's not worth the paper his name is written upon," Mr Kennett said.

"This is an individual who, for some ego-driven reason, believes he's got the answers to the world, which he doesn't.

"Even if Gina Rinehart is behind him, financially, and put all the money that she has behind him, he still wouldn't register on the Richter scale."

Some Liberal MPs have also scoffed at Mr Christensen and Senator Bernardi, accusing them of making empty threats.

"It's ridiculous. They wouldn't be able to muster more than 200 [votes] across the whole country," one Liberal MP said.

"They've only got power so long as they're inside [the party]. They're deluding themselves if they think they'd be able to do anything outside it. They'd be irrelevant.

"The only way they get leverage is by constantly threatening to go, so that's what they do."