President Moon Jae-in has chosen Lee Nak-yon, the current governor of Jeollanam-do Province, to be his nominee for prime minister.
A reporter-turned-politician, Lee hails from Yeonggwang in the heart of the liberals' home turf.
He first entered politics in the year 2000 and served four terms as a lawmaker before becoming the Jeollanam-do governor in 2014.
Lee is seen as a good person to promote Moon's desired reforms and to foster unity among the country's progressives and conservatives.
Lee said selecting the other Cabinet ministers could take some time, as he must wait until he's confirmed before he can make any official recommendations.
Lim Jong-seok was named Moon's chief of staff.
He's a former lawmaker who also served as Moon's chief of staff during the campaign.
Lim previously served as Seoul's deputy mayor of political affairs under the current mayor, Park Won-soon, and is largely seen as a political insider with the ability to reach groups who are not close to Moon.
Lim promised open communication with the main opposition Liberty Korea Party and to work hard in his new role.
Suh Hoon is expected to lead the National Intelligence Service.
He is the agency's former deputy director and served as the national security adviser to the Moon campaign.
Suh says it is necessary to be open to talks between Seoul and Pyongyang and that President Moon should visit North Korea once the current tensions are relaxed.
Joo Young-hoon was selected as the chief of presidential security.
He served 33-years as a bodyguard in the presidential office and guarded the late former President Roh Moo-hyun.
"It will take at least a month for Moon's Cabinet to take shape, since the prime minister and Cabinet members must all go through parliamentary confirmation hearings."
Lawmakers from the conservative Liberty Korea Party, which is now the main opposition, are expected to confirm Moon's pick for prime minister, considering the vacuum of power in the government over the past few months.
Moon's liberal Democratic Party controls 119 National Assembly seats, making it the single largest party in the 299-seat parliament.
However, that's still far short of the majority it would need to pass a bill on its own, which could make it difficult for Moon to govern.
Ji Myung-kil, Arirang News.