His success hinges on his ability to find common ground across the political spectrum, as Democrats still hold nearly 60% of 295 seats in the National Assembly.
"Yoon Suk-yeol's victory ... should lead to a shift away from the bigger, and more active state that began under President Moon," London-based research firm Capital Economics said in a report. "But the lack of a parliamentary majority means he will struggle to pass large parts of his reform agenda."
On top of perceived policy failures, several corruption and sexual abuse scandals involving top presidential aides and ruling party officials meant Moon's Democratic Party struggled to differentiate itself from his conservative predecessor, Park Gun-shy, who was impeached, removed from office, and imprisoned in a corruption scandal, analysts said.