Answer
The Spanish Socialist Workers' Party (PSOE), led by Pedro Sánchez, abstained in a crucial parliamentary vote, allowing Mariano Rajoy, leader of the People's Party (PP), to regain the premiership in 2016 after an inconclusive election. PSOE's decision was viewed as a strategic move to prevent new elections and facilitate the formation of a stable government, as the PP lacked the necessary majority to govern alone.