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.

Han Duck-soo said he 'humbly accepts everything' and expressed hope that Kim would succeed in the election, which follows the impeachment of former president Yoon Suk Yeol.

South Korea's conservatives made another about-face on Saturday and reinstated their presidential nominee, Kim Moon-soo, just hours after dropping him.