Many populist parties achieve an electoral breakthrough but then fail to gain electoral persistence, with their success fading away at subsequent elections. In various cases, they are able to secure regional strongholds of support but with little support elsewhere in the country; the Alliance for the Future of Austria (BZÖ) for instance gained national representation in the Austrian parliament solely because of its strong support in Carinthia. Similarly, the Belgian Vlaams Belang party has its stronghold in Antwerp, while the Swiss People's Party has its stronghold in Zurich.