People Power Party leader Jang Dong-hyeok, eighth from left, speaks Tuesday during a National Assembly forum on investigative gaps exposed by the Jang Yun-gi case and the need for prosecutors’ supplementary investigation authority. Photo by Asia Today

July 14 (Asia Today) -- South Korea's main opposition People Power Party is stepping up a two-pronged campaign against the ruling Democratic Party over prosecutors' supplementary investigation authority and demands for an independent investigation of the National Election Commission.

Inside the National Assembly, the party is preparing legislation under floor leader Jeong Jeom-sik to preserve prosecutors' authority to conduct additional investigations after receiving cases from police.

Outside the legislature, party leader Jang Dong-hyeok is traveling across the country to demand election reforms and a special counsel investigation into ballot shortages during the June 3 local elections.

The party held a forum at the National Assembly on Tuesday titled "Investigative gaps exposed by the Jang Yun-gi case and the need for supplementary investigation authority."