Maori Party insiders say many of those party members have since jumped ship to Mana.
But her strong performance during the Christchurch earthquake where she was a tireless advocate for her constituents will also anchor her base.
Labour receives the most party support with 36 per cent followed by the Maori Party on 25 per cent. National with 15 per cent beats the Greens, 12 per cent, Mana, 7 per cent, and New Zealand First with 3 per cent.
John Key is the preferred Prime Minister with 29 per cent of support, with Phil Goff a distant second on 10 per cent and Maori Party co-leader Dr Sharples and Greens co-leader Metiria Turei both with six per cent.
Jobs, education, the economy and privatisation are the most important issues but while the PM is popular 55 per cent don't believe the government is heading in the right direction and 46 per cent say they are worse off under the current government.
The poll's sample size was 400 Maori roll voters with a margin of error of +/- 4.9 per cent.
Te Tai Tonga is the country's largest electorate taking in the South Island, Wellington, parts of Hutt Valley, Stewart Island and the Chatham Islands.