The party was formed on 1 January 2009, after two parties, the Free Democratic Party (FDP/PRD) and the smaller Liberal Party (LPS/PLS), united. In Vaud and Valais, the parties retain separate organisations. Its youth organisation is Young Liberals. With 120,000 members as of 2015, the FDP has the most members of any party: 20% more than the second-placed Christian Democratic People's Party of Switzerland (CVP/PDC).
