2015 Madrilenian regional election

A regional election was held in the Community of Madrid on Sunday, 24 May 2015, to elect the 10th Assembly of the autonomous community. All 129 seats in the Assembly were up for election. The election was held simultaneously with regional elections in twelve other autonomous communities and local elections all throughout Spain.

The ruling People's Party (PP) emerged once again as the largest political force in the region, but it saw a substantial drop in its vote support and the loss of the absolute majority it had held almost uninterruptedly since 1995—with a brief interlude in 2003—. However, as both the Spanish Socialist Workers' Party (PSOE) and newcomer Podemos fell one seat short of an absolute majority, it meant that the PP could remain in government through an agreement with liberal Citizens (C's). As a result, Cristina Cifuentes became the new President of the Community of Madrid, forming a minority government with C's providing confidence and supply. Cifuentes would be the third regional President in three years, after Esperanza Aguirre's resignation in 2012 and incumbent president Ignacio González not running for the office as a result of several scandals.

The strong performance of both Podemos and C's was at the expense of left-wing United Left (IU)—which lost its parliamentary representation for the first time in history as a result of not reaching the required 5% threshold—and Union, Progress and Democracy (UPyD), whose parliamentary presence was ephemeral having only entered the regional parliament in 2011.