High Quality Content by WIKIPEDIA articles! The President of the Government of Spain usually known in English as the Prime Minister of Spain, is the Spanish head of government. The King of Spain nominates a candidate for the presidency who stands before the Congress of Deputies for a Vote of Confidence, effectively an indirect election of the head of government by the elected Congressional delegates. Once confirmed by the Congress, the king officially appoints the candidate as President of the Government. By political custom established by Juan Carlos I of Spain since the ratification of the 1978 Constitution, the King's nominees have all been from parties who maintain a plurality of seats in the Congress.