The movement Sumar, a political party founded by Spain's Second Deputy Prime Minister Yolanda Díaz, is facing a significant internal power struggle that has become prominent with her decision not to run for office in the upcoming general elections. The party's Coordinating Group has voted to hold an extraordinary congress following the Andalusian elections, where a faction within the party aims to oust the current coordinator, Lara Hernández, amid calls for a strategic update to align with the evolving landscape of leftist politics in Spain.

This upcoming congress is notable as it will be the third such gathering for Sumar within just three years of its establishment, highlighting the instability and shifting dynamics within the organization. The decision to convene the congress reflects deep-seated tensions and disagreements about the future direction of the party in light of recent political developments and a desire to rejuvenate its leadership. As Sumar aims to redefine itself post-Díaz, the outcome of this congress could potentially reshape the party's approach and strategies for engaging with an increasingly competitive political environment.

The implications of this internal conflict are significant for Sumar's role in the broader landscape of Spain's left-wing politics, particularly with the announcement of Díaz stepping away from the leader's role. The upcoming congress is seen as a critical juncture, not only for the party's immediate leadership but also for its long-term viability and relevance in the face of challenges from other leftist groups. Thus, how the factional struggles are resolved may set a precedent for the future of progressive politics in Spain as they navigate their identity and strategies in a rapidly changing political context.