Spanish election 2015: a guide on substate political parties
This change may downplay the importance of substate parties, which had sometimes been able to tip the balance in favour of either PP or PSOE in previous elections. From now onwards, Spanish-level parties will have more options to form different coalitions between them, excluding parties from, say, Catalonia or the Basque Country.
However, ideological differences between those Spain-wide parties -such as Podemos being firmly opposed to PP- and an expected tight result could still give substate parties some margin to influence the formation of the next Spanish government.
Nationalia is releasing this three-article guide on substate parties and on their options to capture seats in the Congress: