Marek Borowski
He led the Democratic Left Alliance (SLD) for a time and was Speaker of the Sejm (the lower, more powerful, house of Poland's parliament) from 2001 to 2004.[2] From 2004 to January 2009 he was the leader and chairman, of a new Polish left-wing party called Social Democracy of Poland (SdPl), formed from a break-away group of SLD.[3] Marek Borowski is an MP from Piła, but in the September 2005 parliamentary elections he contested a seat in Warsaw.Just as his party received a massive defeat in the September 2005 Parliamentary elections, Borowski lost the presidential elections, receiving 10% of the vote and fourth place, despite Aleksander Kwaśniewski's support following the withdrawal of Włodzimierz Cimoszewicz.[4] He most recently ran (unsuccessfully) for the office of mayor of Warsaw in the 2010 local elections.