section_path: Activities before the Yoon administration (2014–2022)
section_name: Activities before the Yoon administration (2014–2022)
paragraph_text: Activities before the Yoon administration (2014–2022)
  
  He ran as the Liberty Korea Party's candidate for mayor of Seoul in the election in 2018. As a result of the election, Park Won-soon of the Democratic Party was elected, and Kim Moon-soo came in second with 23.34% of the votes. Ahn Cheol-soo of the Bareunmirae Party came in third. Afterwards, Kim frequently participated in a protest against president Moon Jae-in in 2019 when the Cho Kuk scandal broke out.
  
  He founded the short-lived Liberty Unification Party on January 31, 2020, and began his activities as the party's representative for the legislative election. It was expected that the Gwanghwamun rally forces will be consolidated, and liberal right-wing values would be put forward in preparation for the general election.
  
  On 18 March 2021, along with Kim Moo-sung and Lee Jae-oh, Kim demanded the unification of the opposition candidates for the Seoul mayoral by-election and the resignation of Kim Chong-in, the emergency response committee chairman of the People Power Party.