The ruling People Power Party is struggling to justify the legitimacy of transferring President Yoon Suk Yeol's role to the party and government, as calls for impeachment escalate.

Amid this struggle a leadership vacuum is opening up in the ruling party.

The main opposition Democratic Party of Korea announced Monday it was seeking to expel the party's Floor Leader Rep. Choo Kyung-ho -- who offered to resign following Saturday's impeachment vote -- from the National Assembly, accusing him of involvement in the insurrection.

The ruling party said it would elect a new floor leader at a meeting scheduled Thursday.

Despite a string of party meetings Monday, the ruling party as of press time has yet to confirm either how much shorter Yoon's term would become, or whether their handover proposal is supported by law or the Constitution. As it stands, Yoon's term is to end in May 2027.

Rep. Lee Yang-soo, a three-term lawmaker of the People Power Party, said he would lead a special team of six ruling-party lawmakers created on Monday to handle necessary procedures for Yoon's orderly retreat.

Lee said the special team would work to "stabilize the state affairs promptly," adding the meetings will take place on a daily basis for the time being, without elaborating when it would terminate its activities.

Lee added the team will "have the opportunity to share with the citizens" about its road map to manage state affairs, without elaborating when.

Rep. Kwak Kyu-taek, senior spokesperson of the People Power Party, told reporters in a briefing Monday morning that the special team will address the fallout from the martial law declaration, provide administrative support to the government and look into legal issues in the transition plan amid claims that the ruling bloc's move has no constitutional ground.

Kwak added that the party's supreme council had discussed the timing of Yoon's resignation, but did not clarify any details of what was being discussed.

In the meantime, the party has been wrestling with its own division over the extent of Yoon's executive power that the ruling party can be entrusted with, as it is currently headed by Han Dong-hoon, who has spoken against Yoon called for his suspension of duties.

Instead, a lawmaker claimed that Yoon's executive power as commander-in-chief and the top decisionmaker of the country remained intact, despite moves to sideline him from his duties following the president's pledge to hand over power to the conservative party and the government.

"Yoon's exclusion from the role has some political motivation behind it," Rep. Yoon Sang-hyun of the People Power Party, a five-term lawmaker, told reporters during the interim period of the emergency party meeting at the National Assembly.

"From a constitutional and legal perspective, Yoon has not been disallowed to take on his role. ... No one can ostracize Yoon from his power unless based on the Constitution or by law."

This virtually refuted Han's argument Sunday during a joint statement with Prime Minister Han Duck-soo that Yoon had entrusted his party with the power to manage state affairs and deal with foreign affairs.

The ruling party leader added that Yoon will no longer play the role of commander-in-chief of the South Korean military, but did not elaborate on who would take control in his stead.

At the four-hour impeachment vote Saturday until around 9:20 p.m., three out of 108 lawmakers of the ruling party broke ranks with the party to take part in the anonymous voting session. Other ruling party lawmakers walked out during the voting session. With only 195 votes, Yoon's impeachment motion was scrapped as it failed to meet the 200-vote threshold for a vote count.

If eight People Power Party lawmakers or more were to vote for Yoon's impeachment, Yoon would be immediately suspended from his role, and Prime Minister Han would serve as acting president until Yoon evades impeachment at a Constitutional Court verdict, or until a new president is elected in a snap election.

Rep. Yoon Sang-hyun said he opposed the impeachment of the president "for the future of South Korea," adding no ruling party lawmakers brought up a need to participate in any impeachment votes in the future during the meeting.

He also said that, should a snap presidential election take place after impeachment and should liberal opposition leader Rep. Lee Jae-myung be elected, he would become immune to multiple criminal allegations, and the national economy and security would be in deep trouble.