Legislative elections were held in Spain on 16 February 1936. At stake were all 473 seats in the unicameral Cortes Generales. The winners of the 1936 elections were the Popular Front, a left-wing coalition of the Spanish Socialist Workers' Party (PSOE), Republican Left (Spain) (IR), Esquerra Republicana de Catalunya (ERC), Republican Union (UR), Communist Party of Spain (PCE), Acció Catalana (AC), and other parties. Their coalition commanded a narrow lead over the divided opposition in terms of the popular vote, but a significant lead over the main opposition party, Spanish Confederation of the Autonomous Right (CEDA), in terms of seats. The election had been prompted by a collapse of a government led by Alejandro Lerroux, and his Radical Republican Party. Manuel Azaña would replace Manuel Portela Valladares, caretaker, as prime minister.
The electoral process and the accuracy of the results have been historically disputed. Some of the causes of this controversy include the formation of a new cabinet before the results were clear, a lack of reliable electoral data, and the overestimation of election fraud in the official narrative that justified the coup d'état. The topic has been addressed in seminal studies by renowned authors such as Javier Tusell and Stanley G. Payne. A series of recent works has shifted the focus from the legitimacy of the election and the government to an analysis of the extent of irregularities. Whilst one of them suggests that the impact of fraud was higher than previously estimated when including new election datasets, the other disputes their relevance in the election result.