Chung Dong-young was the party's candidate in the 2007 South Korean presidential election; he lost to Lee Myung-bak.

[3] These list of key events has been managed by its public primary election committee (국민경선위원회).

Due to the executives of this party's decision, All candidates did not contested during the Hangawi holidays and the 2007 Inter-Korean summit periods.

[5] Before starting their official primary to the South Korean public, they have to access the 'cut-off' process to reduce from 9 to 5.

Based as of September 23, 2007) Source: The current status of the UNDP Primary, Seoprise.com, Retrieved on October 1, 2007.