Prime Minister of Thailand sixteen out of twenty-nine, including the incumbent General Prayut Chan-o-cha. Military dominance began with the country's second Prime Minister, Phot Phahonyothin, who ousted his civilian predecessor in a coup in 1933. The longest serving Prime Minister was Field Marshal Plaek Pibulsonggram at 14 years, 11 months and 18 days. The shortest was Tawee Boonyaket at just 18 days. Nine were removed by coups d'état, three were disqualified by court order, and eleven resigned from office. The youngest ever to occupy office was M.R. Seni Pramoj at 40 years old. Thailand received its first female prime minister, Yingluck Shinawatra, in 2011.
Prime Minister of Australia the Fourth Deakin Ministry (June 1909 to April 1910), when it was known as "Prime Minister (without portfolio)". If a government cannot get its appropriation (budget) legislation passed by the House of Representatives, or the House passes a vote of "no confidence" in the government, the Prime Minister is bound by convention to immediately advise the Governor-General to dissolve the House of Representatives and hold a fresh election. Following a resignation in other circumstances or the death of a Prime Minister, the governor-general generally appoints the Deputy Prime Minister as the new Prime Minister, until or if such time as