Stakes are high for Yoon as his People Power Party (PPP) is aiming to win a majority in the single-chamber, 300-seat assembly, though polls show the elections too close to call.
A failure could undercut Yoon’s key initiatives to boost the economy, fiscal health and birthrates, as well as to bolster trilateral security cooperation with the United States and Japan.
With a 167-seat majority, the main opposition Democratic Party (DP) had passed dozens of contentious bills, including a nursing law vetoed by Yoon and his party.
The democrats had long been deemed to have an edge in early voting. But the conservative PPP chief, Han Dong-hoon, was keen to drum up support from younger voters, highlighting corruption scandals engulfing opposition leaders which had disillusioned many people and eventually helped Yoon win the 2022 presidential election.
“Through the highest-ever turnout in early voting history, let us show those who ignore the law and the people the great power of good citizens who have lived and obeyed the law,” Han said after casting his own vote in a Seoul college town. “Our party doesn’t have criminals to protect.”
The democrats and other opposition parties have described the elections as “judgment day” to hold Yoon’s administration accountable for what they called a “prosecutor dictatorship”. Both Yoon and Han previously served as senior prosecutors.
In a joint survey released on Thursday by four major pollsters, 39 per cent of respondents said they would vote for the PPP and 37 per cent for the DP.
In another poll published on Thursday by Ipsos, 43 per cent said they planned to vote for the DP, and 39 per cent the PPP.