Elections are held every three years for the governing body of Chatham Islands Council.
2022 Chatham Islands Council election
2022 Chatham Islands mayoral election
2022 council at-large
2025 Chatham Islands Council election
2025 Chatham Islands mayoral election
2025 council at-large
2026 Chatham Islands Council by-election
Background In February 2026, councillor Pita Thomas resigned from the council. A by-election to fill the vacancy left by Thomas was to be held from 4 May to 5 June 2026, but the council received no nominations.Public notice: Chatham Islands Council by-election, Chatham Islands Council. 27 March 2026. Accessed 19 May 2026. In June 2026, the council reopened the by-election process, taking nominations for candidates between 11 June and 9 July 2026. Five nominations were received and the by-election took place between 17 August and 18 September 2026. The by-election was won by Georgia Murchie.
2026 council at-large
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