The Christian Popular Union (Unione Popolare Cristiana, UPC) is a Christian-democratic political party, based in Sardinia, Italy. The UPC was launched in August 2009 by Antonio Satta, a former Christian Democrat who had been the regional leader of UDEUR and, later, of the Sardinian Autonomist Populars. The party is based in Sardinia, but has a national structure, consisting primarily of former members of the UDEUR, notably including Gianfranco Saraca, Luca Bagliani, Danilo Bertoli, Sergio Deorsola, and Antonio Potenza (leader of Basilicata's United Populars).