CBS/AP August 23, 2018, 11:37 PM Australian Prime Minister Malcolm Turnbull ousted in party coup, Scott Morrison to replace him

Incoming Australian Prime Minister Scott Morrison is congratulated by his new deputy Josh Frydenberg after a party meeting in Canberra, Australia August 24, 2018.

DAVID GRAY / REUTERS

Australia's ruling party has chosen Treasurer Scott Morrison to become the next prime minister. Morrison will replace Prime Minister Malcolm Turnbull, who is expected to resign. Turnbull had been under pressure from poor polling, a looming election, and a revolt by conservative Members of Parliament (MPs), BBC News reports.

Friday's ballot among Liberal Party lawmakers means Australia's sixth change of prime minister in 11 years, prolonging an era of extraordinary political instability.

According to BBC News, Morrison, the current treasurer, won an internal ballot 45-40 over former Home Affairs Minister Peter Dutton, said Liberal Party whip Nola Marino.

Turnbull did not stand in the leadership contest. He had agreed to hold the ballot after a majority of party MPs signed a letter calling for it to take place.

Turnbull had been staring down calls for his resignation as leadership speculation crippled his government.

On Thursday, he told reporters that Australians would be "rightly appalled by what they are witnessing."