South Korea's main opposition party's presidential campaign said Monday that its candidate, Yoon Suk Yeol, is suspending external activities to overhaul his election campaign committee, an attempt likely precipitated by falling support ahead of the March election.

The People Power Party's campaign has recently been mired in infighting with party leader Lee Jun Seok resigning as a senior campaign official in December after feuding with a Yoon associate. Reports of Yoon's wife allegedly falsifying qualifications on her resume have also caused his popularity to drop.

An official who heads the candidate's campaign committee told reporters on Monday that an overhaul has become necessary, including the resignation of senior campaign officials, in a way that would align with "popular sentiment," according to Yonhap News Agency.