Social Liberal Union  The Social Liberal Union (, USL) was a coalition of political parties in Romania. The alliance contained both centre-left and centre-right parties. The USL was formed on 5 February 2011 initially between the Social Democratic Party (PSD), and the Centre Right Alliance (ACD) of National Liberal Party (PNL) and the Conservative Party (PC). In June 2012 the USL won the local elections by a landslide. After the elections, in September, the National Union for the Progress of Romania (UNPR), originally a breakaway from PSD and PNL, together with the PSD formed the Centre Left Alliance (ACS) and entered into the USL. At the parliamentary elections in December, the four-party coalition won about two thirds of the seats in both the Senate and the Chamber of Deputies. After the "Centre Right Alliance" of PNL and PC dissolved in November 2013, the PC turned leftwards and aligned more with PSD and UNPR. As a result, the centre-right National Liberal Party broke up the coalition on 25 February 2014 and entered opposition. In the 2014 presidential election, PSD, UNPR and PC would designate Victor Ponta as their united candidate, while the PNL formed a new Christian Liberal Alliance (ACL) with the Democratic Liberal Party (PDL) as a precursor to a full merger of the PNL and PDL. Notes:  1 USL was an alliance of two smaller alliances: Centre Left Alliance and Centre Right Alliance. Centre Left Alliance members: PSD (58 senators and 149 deputies) and UNPR (5 senators and 10 deputies). Centre Right Alliance members: PNL (51 senators and 101 deputies) and PC (8 senators and 13 deputies). 2 ALDE was created in June 2015 from a merger of PLR (a splinter of PNL) and PC.