The Socialist Party of Bulgaria (SPB) is a political party in Bulgaria that advocates for socialist principles and policies. Founded in 1990, it emerged from the former Bulgarian Communist Party and aims to represent the interests of the working class and promote social justice, equality, and public ownership. The party participates in national and local elections, often forming alliances with other leftist groups. It seeks to address issues such as poverty, unemployment, and social inequality while promoting a mixed economy that balances private enterprise with state intervention.