The Partido Social Democrata (PSD) is a center-right political party in Portugal, founded in 1974. It aims to promote social democracy, advocating for a mixed economy, individual freedoms, and social justice. The party has played a significant role in Portuguese politics, often participating in coalition governments. The PSD's ideology combines liberal economic policies with a commitment to social welfare. It has been a major player in shaping Portugal's political landscape, influencing policies on education, healthcare, and public services. The party's leadership has included several prominent figures, contributing to its stability and influence over the years.