Apang won the 1978, 1980 and 1984 assembly elections from Yingkiong-pangin Assembly Constituency. Later he won the 1990, 1995, 2000 and 2004 assembly elections from Upper Siang district's Tuting-Yingkiong Assembly Constituency of Arunachal Pradesh. Apang was elected as Chief Minister in 1980. He held the office until 1999, when he resigned triggered by a no-confidence motion by a split in the party. Congress Party. He was elected leader of the newly formed United Democratic Front, a coalition of his own political party, the Arunachal Congress and several others, in 2003. Only a few months later, Apang and his supporting MLAs merged with the Bharatiya Janata Party, the first time the BJP had ever ruled a state in north-eastern India. A few months after the BJP led National Democratic Alliance lost the 2004 general election, Apang returned to the Indian National Congress. In October 2004, Congress won the majority in state assembly election, making Apang return as the Chief Minister. He was in office Chief Minister till 9 April 2007, when Congress MLAs revolted against his leadership under Dorjee Khandu, who succeeded him chief minister and Congress Legislature Party leader. Apang resigned from the primary membership of the Indian National Congress on 17 February 2014 and joined the Bharatiya JanataParty on20 February 2014 prior to Indian general election and Arunachal Pradesh legislative assembly election. On 15th January, 2019 he resigned from primary membership of Bharatiya Janata Party by saying that "BJP now platform to seek power." .He joined Janata dal
Corruption charges
Apang was arrested on 24 August 2010 for alleged involvement in 1000 crore Public Distribution System scam. Apang denied the charges and claimed they are politically motivated, though the government under Chief Minister Dorjee Khandu maintained that the investigation was conducted independently without political interference. The scam allegedly involves fraudulent hill transport subsidy bills that were paid without the required financial oversight while he was the chief minister.
Personal life
Apang is from Yingkiong, the headquarter of Upper Siang district in Arunachal Pradesh. He has three wives. one of Apang's sons was kidnapped at gun point in June 2008. Later that month he returned home safely, an unknown person to the Apang family but claimed to be of the same clan of Yadap Apang kidnapped him.
