Since 1975, the Prime Minister has been both de jure and de facto chief executive, with powers and duties specifically enumerated in the Instrument of Government. In the two neighboring Scandinavian monarchies, the monarch is the nominal chief executive, but is bound by convention to act on the advice of the ministers. However, the so-called Torekov Compromise reached in 1971 by the major political parties, codified with the Instrument of Government that went into effect in 1975, stripped the Swedish monarch of even a nominal role in governmental affairs, thus codifying actual practices that had been in place since the definitive establishment of parliamentary government in 1917.