Former Carterton mayor Georgina Beyer will stand for the Mana Party in Te Tai Tonga, saying she was doing so partly to atone for voting for the Foreshore and Seabed Act in 2004.
Te Tai Tonga is the Maori electorate covering all of the South Island, plus Wellington City and Hutt City.
Ms Beyer was New Zealand's first transsexual MP, serving under Labour from 1999 to 2007. She has struggled with kidney disease since last year but said her health was now steady and she was looking forward to a new challenge.
"When approached about the role, there were a few things to consider as there always are. Taking on this role is my way of making amends to Maori for voting for the foreshore and seabed bill which I was forced into and which totally broke me."
Mana leader Hone Harawira said Ms Beyer would help raise the profile of the Mana Party.