First Constitution (1920–1933/38) The first Constitution reflected
Jean-Jacques Rousseau's idea of national sovereignty. Power was split between the judiciary, the executive and the legislature according to the principles of
Montesquieu. The Constitution provided for a high degree of public initiative and referendums, and made provisions for
cultural autonomy. Despite the Constitution being modelled upon Montesquieu's ideas, there was an imbalance in the distribution of power. The document was radically parliamentarian, vesting the single-chamber
Riigikogu with extensive power over the executive and the judiciary, leading to instability and frequent changes of government. A
State Elder served as both head of state and head of government. Due to chronic government instability (18 governments headed by 10 men from 1920 to 1934), attempts were made to redraft the Constitution. In a referendum held in 1932, voters rejected two proposed drafts of a new Constitution. Still, a constitutional amendment, proposed by the populist
Estonian War of Independence Veterans' League (
Vaps movement) was adopted in a referendum in
1933 and came into force on 24 January 1934. This amendment, which turned the State Elder into a directly elected Head of State vested with broad powers, while separating the role of Prime Minister from the State Elder and reducing the size and power of the Riigikogu, had such a vast impact on the governing system that it is frequently mistaken for a new constitution ("the 1934 Constitution") in its own right. ==Preamble and provisions==