Three candidates in the liberal Democratic Party's primary to choose its flag bearer for the June 3 presidential election -- (from left to right) Gyeonggi Gov. Kim Dong-yeon, former South Gyeongsang Gov. Kim Kyoung-soo and Lee Jae-myung, former leader of the party -- pose for a photo prior to their first debate hosted by the MBC TV network in Seoul on Friday. (Yonhap)
Three candidates in the liberal Democratic Party's primary to choose its flag bearer for the June 3 presidential election -- (from left to right) Gyeonggi Gov. Kim Dong-yeon, former South Gyeongsang Gov. Kim Kyoung-soo and Lee Jae-myung, former leader of the party -- pose for a photo prior to their first debate hosted by the MBC TV network in Seoul on Friday. (Yonhap)

Three presidential contenders of the Democratic Party were set to hold their second public debate Wednesday, four days before the party plans to pick its candidate for the June 3 presidential election.

The debate will bring together former Democratic Party leader Lee Jae-myung, Gyeonggi Province Gov. Kim Dong-yeon and Kim Kyung-soo, a former South Gyeongsang Province governor.

During the 90-minute debate, the candidates will present their visions in key areas, including politics, the economy, diplomacy, security and social policy.

Lee, who declared his presidential bid earlier this month and is leading opinion polls for the presidential election, recently won two regional primaries by a large margin.

The Democratic Party will hold two more regional primaries before it picks a presidential candidate on Sunday.

The upcoming election is triggered by former President Yoon Suk Yeol's ouster over his short-lived martial law declaration in December. Lee lost the presidential race to Yoon by a thin margin in 2022. (Yonhap)