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.

South Korea's People Power Party registered former labor minister Kim Moon-soo as its official presidential candidate on Sunday, a day after it attempted to cancel his candidacy. The ruling People Power Party (PPP) has been in turmoil since former president Yoon Suk Yeol was ousted after he declared martial law in December.