In November 1987, doctors declared Bourguiba unfit to rule and, in a bloodless coup d'état, Prime Minister Zine El Abidine Ben Ali assumed the presidency in accordance with Article 57 of the Tunisian constitution. The anniversary of Ben Ali's succession, 7 November, was celebrated as a national holiday. He was consistently re-elected with enormous majorities every five years (well over 80 percent of the vote), the last being 25 October 2009, until he fled the country amid popular unrest in January 2011.