2026 Castilian-Leonese regional election

A regional election was held in Castile and León on Sunday, 15 March 2026, to elect the 12th Cortes of the autonomous community. All 82 seats in the Cortes were up for election.

In the aftermath of the previous election held in 2022, the People's Party (PP) under Alfonso Fernández Mañueco reached a coalition agreement with the far-right Vox party, the first up until that point, and which would be mirrored in other regions and city councils following the 2023 local and regional elections. All PP–Vox regional coalitions collapsed in July 2024 over a strategic movement from the latter's national leadership, with Mañueco leading a minority government from that point onwards. The leader of the opposition Spanish Socialist Workers' Party (PSOE), Luis Tudanca, was replaced in his post by Soria mayor Carlos Martínez in January 2025, while Vox's regional leader and former regional vice president, Juan García-Gallardo, resigned from his posts in February 2025, citing disagreements with the party's national leadership.

Population decline and ageing and the regional government's management of the August 2025 Spanish wildfires were seen as key themes going into the election, as well as the PP's uninterrupted 39-year period in power in the region. Also featuring in the campaign was the outset of the 2026 Iran war, which saw the prime minister of Spain, Pedro Sánchez, champion a "no to war" position centered around de-escalation, respect for international law and a rejection to the United States's use of joint military bases at Rota and Morón to carry out attacks on Iran; this led to a direct clash with U.S. President Donald Trump, with the latter's threatening to sever Spain–U.S. trade relations. The campaign ended with PP and Vox openly clashing over the right-wing vote, with the latter refusing to cast itself as a junior partner to a prospective PP government while suffering from a series of internal purges of high-profile members.

The election resulted in a new victory for Mañueco's PP, which fell short of an overall majority to govern alone and remained dependant on Vox's support. Conversely, the PSOE under Martínez saw an unexpected growth in votes and seats—reversing a negative trend that saw it collect adverse outcomes in Extremadura and Aragon—a result which was attributed to Martínez's profile and a last-hour mobilization of left-wing voters due to the party's anti-war stance. Vox made modest gains, but underperformed expectations of overcoming 20 percent of the vote, which media attributed to the party's internal conflicts, its stance to block government negotiations in Extremadura and Aragon, and its explicit support to Trump's actions in the Middle East. Parties to the left of the PSOE, United Left and Podemos, fell below expectations and failed to secure the single seat elected under the Unidas Podemos alliance in the 2022 election, whereas the liberal Citizens disappeared from its last regional parliament.