The United Mexican States ("Mexico") is a federal republic comprising 31 states and one federal district (the Mexican Federal District, or Distrito Federal, which contains the capital, Mexico City). According to the 1917 Constitution, executive power in each of those states is deposited in a governor, who is elected for a six-year term by direct, popular, secret universal suffrage.The Head of Government of the Federal District is not considered a governorship, but the position is included on this list of governors for the sake of completeness.