He said Labour should not be satisfied with polling in the 30's and his aim was to lift it to well into the 40s.
He said his contenders were worthy "but if you want the best messenger who can get people to cross the aisle... I genuinely believe I am that person."
David Cunliffe focused on "Kiwi families doing it tough" under National, saying it did not care about the income gap. "Well, we mind the gap. We mind that laissez-faire has turned out to be laissez-unfair."
"We are on track to become the first deficit generation, where people's children are worse off than their parents." He said whatever the outcome of the contest, "Labour has got better days ahead."
"We are going to go forward. The red tide is rising."
He said Labour would prioritise a living wage and had a strong economic record. "We've got a track record to be proud of." He would not rule out buying back partially privatised state assets. "We reserve the right to defend those assets, and to do that, we will rule out no option."
Grant Robertson warmed up the crowd with a joke, saying PM John Key had described Labour's contest as a reality show. "Well, here's a reality show for him: John Key, you are the weakest link."
He said Labour had to set full employment and a living wage for all as its goal, and pledged to set a timetable within which all government workers and contractors would be paid a living wage.
He also said he would reject a neo-liberal agenda, or the Third Way agenda and instead set out an agenda in which people were more important than money. He also pledged that in future his caucus would have a 50/50 split between men and women. He said he had put Mr Key on the back foot before and could do so again. "Let's win back New Zealand."
After the speeches, the media and non-members were asked to leave for a closed question session.
Members can vote at the meeting or by postal ballot.
Other interested observers also rolled up for a peek, including National Party aligned blogger David Farrar, who was asked to leave.
Party President Moira Coatsworth thanked all three for taking part.
It is the first time the party has given its wider membership and affiliates a vote on the leadership, and Ms Coatworth described it as a "historic day for democracy in New Zealand."
The next meetings are in Auckland tomorrow.
The contenders told us just how they'd run things. Read more here.
