Iceland has a left–right multi-party system. Following the 2013 parliamentary election, the biggest parties are the centre-right Independence Party (Sjálfstæðisflokkurinn) and the centrist Progressive Party (Framsóknarflokkurinn). Other political parties with seats in the Althing are the centre-left Social Democratic Alliance (Samfylkingin), Left-Green Movement (Vinstrihreyfingin – grænt framboð), Bright Future (Björt framtíð), and the Pirate Party of Iceland (Píratar). Many other parties exist on the municipal level, most of which run only locally in a single municipality.