On 1 January 2009, Westerland became part of the new municipality "Gemeinde Sylt" created by the merger of the town with the former municipalities Rantum and Sylt-Ost. The debate on this move had started in 2003 when a similar merger happened on Fehmarn. However, local rivalries and desire for independence prevented progress for a time. It took the foundation of a citizens' movement "Bürger für Sylt als Einheit" to advance the plan. In separate referendums in 2008, Westerland (by a large majority) and Sylt-Ost (narrowly) agreed to the merger in May 2008. Rantum followed, but List, Kampen, Wenningstedt-Braderup and Hörnum remained aloof. In September 2008 the merger contract was signed.