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List of prime ministers of Portugal by time in office
From Wikipedia, the free encyclopedia
This is a list of Portuguese prime ministers by time in office.
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![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/9/94/Fernandes_Costa_%28Album_Republicano%2C_1908%29.png/320px-Fernandes_Costa_%28Album_Republicano%2C_1908%29.png)
Of the 90 prime ministers, 8 have served more than eight years, while 56 have served less than one year.
António Oliveira Salazar served as prime minister for more than 36 years, whereas Francisco Fernandes Costa didn't even serve as prime minister because he refused to take the oath of office.