Broad Front (), temporarily going under the slogan of its launching event, Un Paso al Frente (), is a proposed electoral alliance established ahead of the 2026 Spanish general election, to be formed by United Left (IU), Unite Movement (MS), Más Madrid and Catalonia in Common (Comuns). The official name of the alliance was revealed on 25 September 2026. It aims to supersede the existing Sumar alliance, and is left open for other parties such as Podemos to join, though the latter initially rejected joining any such alliance. Other parties such as Coalició Compromís, Més per Mallorca and Chunta Aragonesista are expected to join at some point.
The alliance's platform and candidate are scheduled to be announced on 17 October 2026.
History The proposal was launched in a political event on 21 February 2026, attended by all Spanish government ministers of the Sumar platform (Ernest Urtasun, Mónica García, Pablo Bustinduy and Sira Rego), except for the second deputy prime minister and labour minister, Yolanda Díaz. While Díaz was considered by the founding parties as the alliance's prime ministerial candidate, she formally rejected it on 25 February 2026.
The political parties within the space have struggled for months to find a common platform and lead candidate. Republican Left of Catalonia (ERC)'s spokesperson in the Congress of Deputies, Gabriel Rufián, proposed a broad front of left-wing parties (either directly or through coordination) that also included peripheral nationalists such as ERC, EH Bildu and the Galician Nationalist Bloc, and was himself touted as a prospective candidate, but he rejected such possibility in September 2026. That same month, Podemos's lead candidate Irene Montero suggested standing in a single open primary of the entire left-wing space, a proposal met with both interest and scepticism by other parties. Other names that have been speculated by the media include two of Sumar's ministers (Bustinduy and Urtasun), Ada Colau (former mayor of Barcelona), and Unai Sordo (secretary general of the Workers' Commissions trade union).
The possibility of a snap general election being called over the 2026 Spanish housing protests has forced the political parties to the left of the Spanish Socialist Workers' Party to vastly accelerate their plans to select a joint candidate and establish a common platform. After a meeting of Sumar's government ministers and with Prime Minister Pedro Sánchez gathering opinions on the advisability of calling the election, 17 October 2026 was set as the date for the announcement of the Broad Front's platform and candidate.
Composition Party United Left (IU) Unite Movement (MS) Greens Equo (VE) Más Madrid (MM) Catalonia In Common (Comuns)
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