Iglesias added that the government would be composed in proportion to the election results and concluded it would be "reasonable" if the PSOE leader Pedro Sanchez led the government as prime minister while Iglesias himself assumed the post of his deputy.
On December 20, Spain held a general election that ended the established two-party system, in place in the country for more than 30 years. The conservative People’s Party won 123 seats in the lower house of parliament, 64 less that in the previous election. The PSOE won 90, and left-wing Podemos came third, securing 69 seats. At least 176 seats are required for a parliamentary majority, necessary to form a government.