Prime Minister of Thailand Prime Minister of Thailand The Prime Minister (; ; ) of Thailand is the head of government of Thailand. The prime minister is also the chair of the Cabinet of Thailand. The post has existed since the Revolution of 1932, when the country became a constitutional monarchy. Prior to the coup d'état, the prime minister is nominated by a vote in the Thai House of Representatives by a simple majority, and is then appointed and sworn-in by the King of Thailand. The house's selection is usually based on the fact that either the prime minister is the leader of the
Prime Minister of Brazil appointment) could sometimes come into conflict. 19th century abolitionist leader and historian Joaquim Nabuco said: The shortest prime-ministership was the first of the three periods of Zacarias Góis e Vasconcellos in office, when he occupied the presidency of the Council for just a few days in May 1862 before being replaced. The longest continuous prime-ministership corresponded to the period when the Viscount of Rio Branco was in office: he served as President of the Council from March 1871 until June 1875. The Viscount of Rio Branco served as Prime Minister only once, however, and his period of service as Prime