In the past, its leaders have said there is support among Pacific and other communities, but some voters were confused about whether they could vote for the Maori Party if on the general role.
This weekend, Morgan is expected to outline a deal with the Mana Party not to stand against each in the Maori seats to reduce the risk of vote splitting.
If the Maori Party does win more seats, Maori Party co-leader Marama Fox, a List MP, could be out unless the party vote lifts significantly or she manages a shock upset in Ikaroa-Rawhiti and unseats Labour.
It caps off a week in which the Maori Party lost one of its highest profile potential candidates, broadcaster and former MP Willie Jackson, to Labour. Jackson was poached by Little and is expecting a good place on Labour's list - potentially a safer route to Parliament than an electorate battle with the Maori Party.
The advertisement says the Maori Party can work with whichever party is in Government and also urged Maori voters to ensure a separate Maori party was in Parliament.
However, Labour Party leader Andrew Little this week attacked the Maori Party, saying it was "in a state of virtual collapse" and all but dismissing any chance he would ask the Maori Party to be part of a future Labour government. He said that was because they had been part of the National Government.
Morgan said Little's "trash talk" and approach to Jackson showed Little was desperate.
"The issue that he should be more concerned about is whether or not he will continue to have the loyalty of his Maori caucus, because I would have thought this was a direct slap in the face to those people who have been loyal to Labour and been there in the trenches."
He said the Maori Party did have high calibre candidates in the wing and was confident it would win the Maori seats.