Is Spain heading for a four party system? Assessing the state of play ahead of a series of key Spanish elections

Spain will hold local and regional elections in the coming months, with a general election scheduled for later in the year. Paul Kennedy writes on the state of play in the Spanish party system ahead of the elections, where a surge in support for both the left-wing Podemos, and the centrist Ciudadanos, poses a threat to the country’s two traditional mainstream parties, the Spanish Socialist Workers’ Party and People’s Party.