集中と統一
In the 2003 Catalan regional election, the PSOE's Socialists' Party of Catalonia (PSC) increased its vote total, but ended up in second place after Convergence and Union. After a period of negotiations, the party formed a pact with the Initiative for Catalonia Greens, the Republican Left of Catalonia and the United and Alternative Left, governing Catalonia until 2010.