The Social Democratic Party of Poland (Socjaldemokracja Polska, SDPL) is a new leftist political party in Poland founded in April 2004 as a splinter group from Sojusz Lewicy Demokratycznej (it should not be confused with a former party Social Democracy Of The Republic Of Poland - SdRP). In May 2005 the party reached an agreement to go to the parliamentary elections with Unia Pracy and Zieloni 2004 ; it also has its own candidate in the presidential race, party leader Marek Borowski .
