(CNN) The United Nations Security Council Thursday formally approved the nomination of former Portuguese Prime Minister Antonio Guterres to be the next secretary-general.

The recommendation now goes to the 193-member UN General Assembly for final ratification.

Guterres, who was head of the UN's refugee agency for 10 years until 2015, emerged as the Security Council's runaway favorite after the latest in a series of straw polls on Wednesday.

The informal votes were used by the Security Council to thin the ranks of the 13 candidates who entered the race to become the new face of the UN.

"We have a clear favorite and his name is Antonio Guterres," Russian UN Ambassador Vitaly Churkin, who is president of the Security Council, said when announcing the recommendation.

He said the full UN membership would vote on the issue Friday at 10 a.m. "We hope it can be done by acclamation," Churkin said.

The quick approval signaled that Russia and the United States could work together on UN issues despite the serious differences dividing them in hotspots around the globe.

Guterres will confront a range of issues, from war-torn Syria and Yemen to the acquisition of nuclear weapons by North Korea and the refugee crisis in Europe.

If selected by the membership for the five-year term, he would succeed Ban Ki-moon, a South Korean whose second five-year term ends on December 31.

Samantha Powers, the United States' Ambassador to the UN, said the recommendation of Guterres went smoothly because he was widely considered the most competent person for the job based on his experience, vision and versatility on a range of issues.

"It was remarkably uncontentious, uncontroversial, and I think it speaks to the fact that each of us represent our nation and each of us know how fundamentally important this position is in terms of the welfare of our own citizens," Powers said after the Security Council's recommendation.

"If we have these transnational threats, and we don't have somebody at the helm of the United Nations that can mobilize coalitions, that can make the tools of this institution ... work better for people, that's going to be more pain and more suffering and more dysfunction than we can afford."

Guterres, a trained engineer who worked as an assistant professor before entering politics in 1974, led his country from 1995 to 2002 as head of the Socialist Party.

From 2005 to 2015, he served as the United Nations High Commissioner for Refugees. He is credited with cutting costs at the agency during his tenure, as well as lifting its performance as it grappled with the migrant crisis.

A practicing Catholic, Guterres remarried after his first wife died of cancer, and has two children.

In Guterres' vision statement in applying for the position, he wrote of the challenges facing the world in terms of rising inequality, terrorism and organized crime, climate change and the proliferation of armed actors internationally.

He wrote that the UN was "uniquely placed to connect the dots to overcome these challenges," but that change and reform are needed.

"People in need of protection are not getting enough," he wrote. "The most vulnerable, such as women and children, are an absolute priority. We must make sure that when someone sees the Blue Flag, she or he can say: 'I am protected'."