Mufi Hannemann Democratic Peter Carlisle Independent The 2010 Honolulu special mayoral election was held on September 18, 2010.

In 2010, he announced his intention seek the Democratic nomination for Governor of Hawaii in the gubernatorial election.

Under Hawaii's resign-to-run law, Hannemann had to resign as Mayor of Honolulu in order to pursue election to another office in the state.

[3] Mayor Hannemann resigned from office on July 20, 2010, and formally became a candidate for Governor of Hawaii.

[3] The Honolulu City Council set the date for the mayoral election for September 18, 2010.