The National United Party is a political party in Vanuatu. It was founded by Vanuatu's independence leader Walter Lini when he broke away from the Vanua'aku Pati, alongside businessman Đinh Văn Thân. It is a social democratic party which traditionally received most of its support from English speakers. In 1991, Walter Lini, who had served as prime minister of Vanuatufor 12 years as a member of the Vanua'aku Pati and lost his position after a split in the party, founded the NationalUnited Party, soon becoming its leader. Following Walter's death in 1999, his brother Ham Lini became party leader. The party became one of the largest political parties in Vanuatu along with the Vanua'aku Party and the Union of Moderate Parties, and participated in coalitions with both at various times. In the July 2004 elections, the party won 10 of the 52 seats, and because of losses by the other major parties, it became the largest single party in Parliament. In December 2004, Ham Lini became prime minister, the first member of NUP to take this position while a member of the party. At the 2008 elections, the NUP lost 2 seats, and received a total of 8 seats in Parliament, becoming the second largest party. Ham Lini was not able to form another government, but the National United Party became an important coalition partner in the new government formed by the Vanua'aku Party. After the 2012 elections NUP remained in coalition with the People's Progress Party in the Kilman government. The party went into opposition upon the election of Moana Carcasses as Prime Minister in 2013. It returned to government in 2014 when a motion of no confidence brought the government of Joe Natuman to power, with Ham Lini as Deputy Prime Minister, then returned to opposition in 2015 during the Sato Kilman government. Although untarnished by the bribery scandal that brought down Kilman's government, NUP won only 4 seats in the subsequent general election, 3 of them on Pentecost Island. As of 2016, the party is once again in government, as part of a broad coalition, and Ham Lini is Minister for Climate Change.