The New Progressive Party was a centre-leftpolitical party in South Korea. The New Progressive Party was established by a number of Democratic Labor Party members who left the party in reaction to the dominating Korean nationalist faction. The first party president was Roh Hoe-chan, who was elected at the 2004 Parliamentary election as a member of the Democratic Labor Party. The NPP failed to take seats in the National Assembly in the 2008 general election, despite Roh Hoe-chan being expected to win a seat, being that he was winning in most of the pre-vote surveys. In the 29 April 2009 by-election, the NPP looked to win a seat for the district of Ulsan based on its pro-Labor population statistics. The NPP nominated Cho Seung-soo, former AM in Ulsan Buk-gu, 2005. The NPP negotiated with the Democratic Labor Party to nominate the Progressive sole candidate before the beginning of the by-election. The NPP and DLP finally negotiated the nomination of the candidate Cho Seung-soo to run against the conservative candidates. In the by-election, Cho beat the GNP candidate and the NPP finally took one seat. In the 2010 local government election of mayor of Seoul, NNP candidate Roh Hoe-chan received 3% of the vote. But, the Democratic Party'sHan Myung-sook was just behind Oh Se-hoon for 1~2% so, whose supporters criticised him for not retiring. In 2011, Democratic Labor Party suggested to merge, but in referendum of party members, the proposal failed with 50% approval. Cho Seung-soo left the party, thus the New Progressive Party lost one seat in the Korean National assembly. In December 2011, a faction of the NPP, led by Sim Sang-jeong, left to join the Unified Progressive Party. In 2012, the New Progressive Party proposed to unite with the Socialist Party. The Socialist Party agreed to unity at its last party congress on 19 February 2012, with a vote of 93% in favour. Both parties held a unity ceremony on 4 March 2012. Since NPP couldn't gain the 3% of proportional vote in 19th National Assembly Election held on 11 April 2012, party's status is now unregistered by South Korean law, which indicates which party couldn't gain 2% of votes in election will be deregistered automatically. Deregistration made the NPP to form a new party as a new leftist party which will represent Labor Party. In April 24, the party convened national committee and decided to form a 'New party forming committee', as the NPP was not allowed to use its current name until 2016.
