While the Democratic Party of Korea is experiencing internal strife over the issue of introducing a 'preferential voting system' instead of a runoff vote in the party representative election at the August 17 national convention, Democratic Party lawmaker Song Young-gil, the leader of the party, defended the introduction of the preferential voting system, saying, "We have confirmed that there is no violation of the party constitution and rules." Rep. Song said on Facebook on the 12th, "So far, I have not considered the pros and cons of the primary election rules. It is not the right attitude for a player on the field to question the rules. “Because,” he said. He said, “Under the same leadership, the Gyeonggi Provincial Party Chairman was elected in this way, and the National Assembly Speaker election was also held in this way.” He said, “It was right then, but is it wrong now? What has changed is the party constitution and rules, or the calculation method,” criticizing the pro-Blue party members of the party who oppose the preferential voting system. At the same time, he said, “Stopping the party’s procedures because of the advantage or disadvantage of a specific candidate is truly a denial of party member sovereignty,” and added, “If the highest level overturns the decision of the National Party Congress Preparatory Committee (Preliminary Committee), as some claim, would the party members accept it? The owners of the rules are not the candidates, but the party members.”