Members of both the lower and upper chambers, Congress of Deputies and Senate, respectively, will be elected the same day for four-year terms. The election campaigns began on Thursday and are supposed to finish at midnight of the election day.
Spain had to call a snap general elections, the fourth in four years, after the previous one in April ended inconclusively. Back then, the Spanish Socialist Workers' Party (PSOE) of the acting Spanish prime minister, Pedro Sanchez, won the vote but but fell short of an outright majority. Their attempts to secure support from other political parties, in particular the anti-austerity Unidas Podemos party, yielded no results either.
The other political parties on the landscape include the conservative People's Party, the populist Vox, the centrist Ciudadanos, the far-left Mas Pais, and the pro-independence Catalan coalition of Republican Left of Catalonia–Sovereigntists, among others.