Why Lee Jae Myung Became South Korea’s President Immediately
Lee Jae Myung’s term began when South Korea’s National Election Commission confirmed him as the winner on June 4, 2025. Because the election filled a vacant presidency after Yoon Suk Yeol’s removal, there was no outgoing president serving a remaining term or waiting transition period.
Timeline
- 2025-04-04: South Korea’s Constitutional Court upheld Yoon Suk Yeol’s impeachment and removed him from office.
- 2025-06-03: Voters chose a successor in the presidential election held to fill the vacancy.
- 2025-06-04 06:21: The National Election Commission confirmed Lee Jae Myung as winner and his term began immediately.
- 2025-06-04 11:00: Lee delivered his inauguration address and took the presidential oath at the National Assembly.
Lee Jae Myung became South Korea’s 21st president immediately after the National Election Commission confirmed his victory on the morning of June 4, 2025. The government’s official account places the start of his term at 6:21 a.m. Because the vote filled an already vacant presidency, there was no outgoing president completing a scheduled term and no separate transition interval before presidential authority transferred. [1][2]
The vacancy followed the Constitutional Court’s April 4 decision upholding the impeachment of President Yoon Suk Yeol. The court’s unanimous holding removed Yoon from office at the time of the decision. That fact changed the legal timetable from a routine election near the end of an incumbent’s term to a special presidential election triggered by a vacancy. [3]
Article 68 of South Korea’s Constitution draws the distinction. When an incumbent’s term expires normally, a successor is elected 70 to 40 days before that expiration. When the presidency is vacant, however, Article 68(2) requires a successor to be elected within 60 days. The Public Official Election Act likewise provides a special timetable for an election to fill a presidential vacancy. [4][5]
Voters cast ballots on June 3. According to the government account of the confirmed result, Lee received 49.42%, or about 17.28 million votes. Kim Moon-soo received about 14.39 million and Lee Jun-seok about 2.91 million. The National Election Commission then held a plenary meeting, declared Lee elected and issued the certificate of election. [1]
The immediate start should not be confused with the later public inauguration event. Lee assumed presidential authority, including command of the armed forces, after the election commission’s confirmation. He visited Seoul National Cemetery and at 11 a.m. delivered an address and took the oath at the National Assembly. The ceremony publicly marked the inauguration, but the official account says the term had already begun that morning. [1][2][4]
This pattern has a practical purpose: an election held because the presidency is vacant must restore a fully empowered president without leaving an additional handover gap. An acting president can maintain continuity while the office is empty, but the confirmed winner of the vacancy election takes over directly. Lee began a five-year term rather than serving only the remainder of Yoon’s interrupted term. [1][2][4]
The word “immediately” therefore describes constitutional succession, not the speed of vote counting or an exception created for one candidate. Yoon’s removal created the vacancy, the Constitution required a successor election within 60 days, voters chose the successor, and the election commission’s formal confirmation activated the new presidency. That sequence explains why Lee’s authority began before a conventional transition period could occur. [1][3][4][5]
Sources
- Korea.net — Lee Jae Myung officially begins as the 21st president
- Korea.net — Lee Jae Myung’s inauguration address
- Constitutional Court of Korea — Decision removing President Yoon Suk Yeol
- Korean Legal Information Institute — Constitution of the Republic of Korea, Article 68
- Korean Legal Information Institute — Public Official Election Act, special election timetable