Rivera was first elected to the Parliament of Catalonia in the 2006 regional election, and remained a member until he stepped down before the 2015 parliamentary election. Launching the Citizen's campaign for the Parliament of Catalonia in 2006, Rivera published a number of leaflets where he posed naked alongside the caption: "We don't care where you were born. We don't care which language you speak. We don't care what kind of clothes you wear. We care about you". Rivera, and the wider Citizens party, are opposed to Catalan independence.