During both Samak Sundaravej and Somchai Wongsawat's brief terms as Prime Minister, Korn served as Shadow Finance Minister for the Democrat Party.
Despite objections from its coalition partners, the PPP, in an urgent meeting, unanimously decided to renominate Samak Sundaravej.
In mid-2008, the People's Alliance for Democracy (PAD) renewed its large protests against the government of Prime Minister Samak Sundaravej, who was the declared nominee of the former Prime Minister Thaksin Shinawatra.