The Prime Minister said a two-thirds majority on leadership was "rarely, if ever achieved", meaning the change effectively ensures a future Liberal leader will serve a full-term in office. "Indeed it would be the worst and weakest response to such a threat", Mr Turnbull said.
The ousting of Rudd, Julia Gillard, Tony Abbott and Malcolm Turnbull sparked a decade of leadership wars within both the major parties and led to claims the revolving door prime ministership has made Australia an worldwide joke.
Morrison described the rule change as historic and the biggest in the 74 years of the party's history.
"(Labor Premier) Dan Andrews successfully convinced Victorians that they shouldn't make a change", Mr Morrison told the Herald Sun.
"I will remain the Prime Minister and will continue to serve as Prime Minister, implementing our plans for the stronger economy that Australians rely on", Mr Morrison said.
"They're sick of it and we're sick of it and it has to stop, that's why we've put this rule in place."
Lamar Jackson leaves game, placed in concussion protocol
It will up to Matt Ryan and Julio Jones to try to salvage what's left of a disappointing season against the rejuvenated Ravens. In Flacco's absence, Jackson has been the spark to end a three-game losing streak and perhaps a three-year postseason drought.
After The Daily Telegraph revealed on Monday that Mr Turnbull was privately urging moderates to defy Mr Morrison's wishes, Mr Turnbull publicly doubled down on his position, saying Mr Kelly's preselection should not be saved in the interests of party democracy.
There were calls to change the Liberal Party's leadership rules in August when former Prime Minister Malcolm Turnbull was ousted and replaced by Scott Morrison.
Prime Minister Scott Morrison has instead urged his colleagues not to be spooked by the humiliating defeat in Victoria.
Senator James McGrath was forced to cut his interview with Sky News early tonight to attend the emergency meeting.
He said he had asked the party whips, Nola Marino and David Bushby, to work up a proposal.
Ms Merkel met Mr Morrison on Saturday and was photographed holding briefing note that included a portrait of our new PM.
Yankees, Phillies Turn To Alternatives With Corbin Off Market
There has been speculation that Corbin will sign with the Yankees for less money to play for the team he grew up rooting for. Throughout the 2018 regular season, Corbin put together an 11-7 win-loss record through 200.0 innings pitched in 33 starts.
The remarks stunned MPs - even the ex-PM's one time supporters - who found Mr Turnbull's remarks "highly hypocritical" after he only months earlier accused other former prime ministers Tony Abbott and Kevin Rudd of being "miserable ghosts" who continually disrupted politics.
The new rule, decided at a snap Liberals meeting in the capital, will apply to a Liberal leader after he or she has won an election.
Immediately after Mr Turnbull's knifing, Mr Rudd called for the Liberal Party to follow Labor.
Mr Morrison still believes he can beat Labor leader Bill Shorten.
Controversial Liberal MP Craig Kelly should face preselection for the Sydney seat of Hughes and not get re-endorsed by the NSW state executive, former prime minister Malcolm Turnbull says.
If the change had been introduced before the August spill, Mr Morrison would not have had enough support to replace Malcolm Turnbull, who would still be prime minister.
Trump wants Kim to know he likes him, will fulfill wishes
However, after hosting their third summit meeting with Moon in Pyongyang in September, Kim has agreed to visit Seoul . North Korea is seeking security guarantees from the US and relief from worldwide sanctions.
"The current rules have produced long periods of stability and long periods of instability, " he said.