Where do Spain’s political parties stand after the country’s local and regional elections?

Spain’s local and regional elections on 24 May were expected to give an indication of where the main parties stand in the leadup to the country’s next general election. Paul Kennedy writes that while Mariano Rajoy’s Popular Party and the centre-left PSOE remain Spain’s two largest parties, the elections confirmed their overall decline alongside the rise of new challengers in the shape of Podemos and Ciudadanos