Lee Jae-myung and Kim Moon-soo represent the opposite sides of a country polarized over former President Yoon Suk Yeol’s use of martial law and his ouster.

South Korea’s embattled conservative party has taken the unprecedented step of nullifying its primary and replacing presidential candidate Kim Moon Soo with former Prime Minister Han Duck-soo, just one week after Kim’s selection.

South Korea's conservatives made another about-face on Saturday and reinstated their nominee, just hours after dropping him and reopening the nomination process as the divided party struggled for unity to challenge the liberal frontrunner in a presidential election four weeks away.