"Questions are precious and what we don't want to do is to have the same question asked by different parties to the same person."
He will be put to the test himself today, leading his party for the first time beyond the scripted speech with which he ended 2011.
Some of the attention this week will be on veteran parliamentary performer NZ First leader Winston Peters, who has returned with seven other MPs, six of them novices, after three years in the wilderness. Speaker Lockwood Smith, who took a firm line last term on behaviour in the House, does not believe Mr Peters will be a problem , saying he was an "astute enough politician to see that things have changed".
Labour and NZ First have a co-operative history already. Mr Peters was Labour's Foreign Minister between 2005 and 2008. Labour also backed him in a fierce backroom fight with the Greens in December over House seating plans.
The Greens won the better position, next to the main aisle, but later that week Mr Peters attacked them as fair-weather friends for citing as one of their supporting arguments their prospective co-operation with National. additional reporting Amelia Romanos
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Parliamentary poster - A8