Argentina's President and Vice-President hold office for four years and are elected directly in a two-round ballot

Background

Article 90 of the Constitution gives the President and Vice-President a term of cuatro años and allows them to be re-elected or to succeed each other for only one consecutive period. Once they have done so, neither may be elected to either office again except after an interval of one period.
Article 94 has them elected directly by the People, en doble vuelta, and makes the whole national territory a single district for the purpose.
Article 95 requires the election to be held within the two months before the end of the sitting President's mandate.
Article 96 holds the second electoral round, where one is required, between the two most-voted tickets, within treinta días of the first.
Article 97 proclaims the leading first-round ticket elected if it has taken more than cuarenta y cinco por ciento of the valid affirmative votes cast.
Article 98 proclaims it elected on a lower bar as well: at least cuarenta por ciento of the valid affirmative votes, together with a lead of more than diez puntos porcentuales over the ticket next in votes.
Article 91 states that the President leaves power on the very day the four-year period expires, and that no interruption can be a reason to complete the term later.
Article 99 makes the President the supreme head of the Nation, head of the government and politically responsible for the general administration of the country.