Herning is a municipality (Danish, kommune) in Region Midtjylland on the Jutland peninsula in western Denmark. The municipality covers an area of 1,336 km² and a total population of 82,935 (2005). Its mayor is Lars Krarup, a member of the Venstre (Liberal Party) political party. The main town and the site of its municipal council is the city of Herning. On January 1, 2007, as the result of Kommunalreformen ("The Municipality Reform" of 2007),] Herning municipality was merged with former Aulum-Haderup, Trehøje, and Aaskov municipalities to form the new Herning municipality.