Ioannis Kasoulides served the Democratic Rally in various roles, including that of Chair of the party's Youth Organization. In 1991, he was elected as a member of the House of Representatives of Cyprus and in March 1993 he was appointed by then President Glafkos Clerides as the Government Spokesman, a position he held until April 1997 when he was appointed Minister of Foreign Affairs. He remained Foreign Minister until the end of term of the Clerides administration in 2003. As Minister of Foreign Affairs, Kasoulides oversaw Cyprus' EU integration process.