 Teeven was involved in the prosecutions of Dési Bouterse, Mink Kok, Johan Verhoek, and Willem Holleeder.In 2002, Teeven succeeded Pim Fortuyn as Front runner (lijsttrekker) of Livable Netherlands (Leefbaar Nederland).From 23 May 2002 to 30 January 2003, he was the parliamentary group leader of Livable Netherlands in the House of Representatives and also a member of the House of Representatives from 23 May 2002 – 30 January 2003.