Sexenio is the popular term for the term of office on the President of Mexico. Under article 83 of the Mexican Constitution, the president is limited to a single six-year term, and no one who holds the office, even on a caretaker basis, is permitted to run for or hold the office ever again. It is one of the country's most important political institutions, because it is one of the few significant limitations on executive power in Mexico, which is strong at local, state, and national levels. The sexenio was a reaction to failed re-election experiences occurring during Mexico's first fifty years as an independent country and, most notably, the Porfiriato era (1876–1911).
Originally known as the "sexenal plan" (Plan Sexenal), the main goal of the sexenio was to provide a clear path to follow for governmental actions during a president's term of office, with the intention to fulfill the unsatisfied social and economic demands—mainly those related to agricultural, industrial and urban development and to the improvement of precarious working conditions—which were major root causes of the 1910 revolution.
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