The 2017 South Korean presidential election took place on 9 May 2017 as an early, snap contest called after the removal of President Park Geun‑hye. The vote filled the vacancy created when the Constitutional Court upheld the impeachment decision of the legislature and removed the president from office. It was conducted as a single round under a first‑past‑the‑post system: the candidate with the most votes wins outright, and the office carries a single non‑renewable five‑year term.
Background and cause of the snap election
The election was moved forward from the originally scheduled date after South Korea's highest court sustained the impeachment handed down by the National Assembly. The impeachment followed a high‑profile corruption and influence‑peddling scandal that dominated public debate and led to widespread protests. Once the court confirmed the removal, the electoral timetable required a presidential contest to be held within a statutory period, producing the 9 May date.
Electoral field and main contenders
The campaign featured multiple candidates spanning the political spectrum. The principal contenders included a liberal challenger, a conservative nominee, and centrist figures who sought to capture voters disaffected by scandal. The center‑left Democratic Party coalesced around Moon Jae‑in, a former human rights lawyer and 2012 presidential runner‑up. Conservative and moderate parties each presented candidates who emphasized stability, economic management, and institutional reform.
Result and immediate significance
The election produced a clear plurality victory for the Democratic candidate, who secured enough votes to become president without a runoff. The result marked a political shift after years of conservative administrations and signaled public support for priorities such as anti‑corruption measures, reform of large conglomerates, and a renewed approach to inter‑Korean relations. The incoming government pledged to pursue institutional reforms while balancing economic and security concerns.
Features and longer‑term impact
- Single‑round, plurality voting: the president is elected directly by voters in one national contest.
- Timing: the court‑upheld impeachment accelerated the election timetable, demonstrating constitutional mechanisms for executive removal and succession.
- Policy implications: the result influenced approaches to diplomacy with North Korea, domestic economic policy, and anti‑corruption enforcement.
- Political realignment: the campaign and outcome reshaped party strategies and public expectations about accountability.
As a turning point in contemporary South Korean politics, the 2017 election combined legal, institutional and electoral dynamics: judicial confirmation of impeachment, a popularly decided presidential succession, and a mandate for change that affected subsequent policy debates and international relations.