Local elections were held in Taiwan on 5 December 2009 to elect magistrates of counties and mayors of cities, councillors in county/city councils, and mayors of townships and county-administered cities, known as the three-in-one elections (Chinese: 三合一選舉). The elections were not held in the special municipalities of Kaohsiung and Taipei as well as the counties and cities that were set to be reform as special municipalities in 2010, including Taipei County, Taichung County, Taichung City, Tainan County, Tainan City, or Kaohsiung County. The new formed municipalities has their elections in 2010.