
The Spanish Socialist Workers' Party is a social-democratic political party in Spain. The PSOE has been in government longer than any other political party in modern democratic Spain, namely from 1982 to 1996 under Felipe González; from 2004 to 2011 under José Luis Rodríguez Zapatero; and currently since 2018 under Pedro Sánchez.

The 2016 PSOE crisis was a political conflict within the Spanish Socialist Workers' Party (PSOE), starting on 26 September 2016. Long-standing discontent with party Secretary General Pedro Sánchez and the combination of a series of circumstances resulted in a party revolt to force Sánchez's dismissal on 28 September, in an episode lasting until 1 October colloquially dubbed by some media and journalists as the "war of the roses". The ensuing power vacuum and Sánchez's replacement by an interim managing committee, coupled with the party's turn to allow a PP minority government after a 10-month deadlock on government formation and the resulting worsening of relations with its sister party in Catalonia, the PSC, triggered a crisis of a scale unprecedented in the party's 137 years of existence.

Casa Labra is a pub in Madrid located close to the Puerta del Sol that was established and has been open since 1860. It is famous for being the site for the foundation of the Spanish Socialist Workers' Party by Pablo Iglesias on May 2, 1879.

Euskal Ezkerra (EuE) was a political party in Euskadi, Spain. EuE was formed as break-away from Euskadiko Ezkerra in 1993 when EuE merged with Spanish Socialist Workers' Party.
The Ideas Foundation for Progress, also known as the Fundación IDEAS, was a Spanish think tank that works on political ideas and proposals for the Spanish Socialist Workers' Party (PSOE). In this regard, it integrates the foundations previously created and tied to the PSOE.

The People's Socialist Party was a Spanish political party.

The Popular Front in Spain's Second Republic was an electoral alliance and pact signed in January 1936 by various left-wing political organizations, instigated by Manuel Azaña for the purpose of contesting that year's election. In Catalonia and today's Valencian Community the name of the coalition was Front d'Esquerres.

Valencian Socialist Party was a political party in Valencia, Spain. It existed between 1974 and 1978, during the Francoist dictatorship and the early Spanish transition to democracy, which had banned all the political organizations other than those in the Movimiento Nacional. The party wasn't legalized until the 9 of April 1977.

Socialist Youth of Spain is the youth organisation of the Spanish Socialist Workers' Party (PSOE) in Spain. Headquartered in Madrid, the organization was founded in 1906 and is aligned internationally with the Young European Socialists and the International Union of Socialist Youth.

El Socialista is a Spanish language socialist newspaper published in Madrid, Spain. The paper is the organ of the Spanish Socialist Workers' Party (PSOE).