After its most successful election - taking all but one of the Māori seats - Te Pāti Māori is amping up for the next three years as "the only true opposition".  It's a dramatic turnaround for a party dumped out of Parliament entirely in 2017, but co-leader Debbie Ngarewa-Packer says that was a critical part of the party's growth.  They are also looking ahead to their next generation of leaders, she says, and plans are afoot to shake Parliament up and normalise it for Māori.  In this week's Focus on Politics, Political Reporter Giles Dexter asks Te Pāti Māori co-leader Debbie Ngarewa-Packer to reflect on what the party did to win all but one of the Māori electorates and what it has planned for the 54th Parliament.