[1] The most relevant of them was that of 1996, which came into force in the following year; due to its changes to the electoral system, it is usually considered a new Constitution,[2] the country's seventh (following those of 1830, 1918, 1934, 1942, 1952 and 1967).
Until the 1994 general election, all the elective posts were voted on the same day, and there were multiple presidential candidacies in every party (the so-called Ley de Lemas).
Starting in 1999, mid-year primary elections were held at the beginning of the electoral cycle, in order to elect single presidential candidates for every party.
[2] On 26 October 2014, alongside the general election, Uruguay held a constitutional referendum on a proposed amendment to article 43 of the Constitution, lowering the age of criminal responsibility from 18 to 16.
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