The Christian Social Union in Bavaria () is a Christian democratic and conservative political party in Germany. The CSU operates only in Bavaria, while its larger sister party, the Christian Democratic Union (CDU), operates in the other fifteen states of Germany. The CSU has 45 seats in the Bundestag, making it the smallest of the five parties represented. The CSU was founded in some ways as a continuation of the Weimar-era Catholic Bavarian People’s Party (BVP). At the federal level, the CSU forms a common ‘CDU/CSU’ faction in the Bundestag with the CDU, which is frequently referred to as the Union Faction (die Unionsfraktion). Until the 2013 election, the CSU governed at the federal level along with the CDU in a coalition government with the liberal Free Democratic Party (FDP). In the state of Bavaria, the CSU governed as the major party in a coalition government with the FDP from 2008 to 2013. Since the 2013 Bavarian state election the CSU governs alone with an absolute majority. The CSU is a member of the European People’s Party (EPP) and the International Democrat Union. The CSU currently has three ministers in the cabinet of Germany of the federal government in Berlin, while party leader Horst Seehofer serves as Minister-President of Bavaria: a position that CSU representatives have held since 1957.