During Yoon's six hours of martial law on December 3, Lee climbed the National Assembly's walls to avoid security cordons deployed on Yoon's orders. He livestreamed his exploit, urging viewers to come to parliament and demonstrate to prevent the arrest of lawmakers.

South Korea’s main liberal opposition party has tapped its former leader Lee Jae-myung as presidential candidate in the June 3 vote.

South Korea's Democratic Party presidential candidate Lee Jae-myung maintained a significant lead in opinion polls on Monday, though his eligibility to run rests on the outcome of legal trials over election law violations.