There are many definitions of the word mana. In politics you earn mana, for example by doing great things or by working hard. You don't just have mana because you are a politician. Georgina Te Heuheu has great mana. She worked tirelessly as an MP for many years with humility, grace and principle.
You can also lose mana just as easily, and the person who comes to mind is Donna Awatere-Huata after the Pipi Foundation scandal. Almost instantly she lost respect (mana) that many people had for her and the work she did as an activist, educationalist and Act Party MP. (I understand Donna is working again for the betterment of Maori education, and this will no doubt be rebuilding her mana).
The recent announcement of the new, albeit very similar, relationship between the Maori Party and the National-led Government should come as no surprise to anyone who follows Maori politics. In speaking with friends in the Maori Party, there is a strongly held view that there was no other sensible option. If the Maori Party is to achieve anything meaningful, they had to ensure they are in a position to have influence, a key word associated with mana.
You see, someone like Georgina Te Heuheu not only possessed great mana; she exercised it too - by having influence. Ministerial positions, my Maori Party friends tell me, are not about power and prestige (words also associated with mana) but about influencing policy and resourcing decisions and being in a position to effect positive change for the people you represent. That's mana, they tell me.
The Mana Party, or "the movement of the people" as they called themselves during the election, focused their campaign as the voice of the poor and marginalised, and at times seemed to think they were the only party that had the right to be this voice.