On Monday a senior figure from South Korea's ruling Minjoo Party made a shock announcement that he was supporting the opposition People Power Party candidate Yoon Seok-youl's bid for presidency.
Since then, Jeong Woon-hyeon, a leftist journalist and once chief of staff to a prime minister in outgoing president Moon Jae-in's government, has received no small amount of flak for switching sides.
But Jeong's characterization of the Minjoo candidate Lee Jae-myung as an "unpredictable monster president" in waiting has resonated with the public.