[1][2] After graduating from Cheongju High School in 1973,[2] he studied dentistry at Yonsei University.

[1] In 1977, he was detained for 2 years[1][3] due to leading a protest to abolish the Restoration Constitution.

[8] He resigned on 10 November due to the disagreement with the party's decision to join outdoor rallies against the President of the Republic, Park Geun-hye involved in a political scandal.

[1] Prior to the local elections in 2018, Kim was selected as the Bareunmirae candidate for Gyeonggi governorship.

[15] In February 2020, Kim joined the United Future Party and was elected as one of the vice presidents.

[16] Kim married Chun Eun-joo in 1985,[17] who is a cousin to Yang Hyun-suk, the former Chief Executive Officer of YG Entertainment.