Dr Jess Berentson-Shaw says everybody needs support, including Kiwis already receiving benefits.
But he said the country's border needs to be water tight to ensure that doesn't happen.
After Simon Bridges wrestled control of the party, she announced plans to leave politics at the end of her term. With Todd Muller in charge, that is no longer the case.
The Prime Minister said her transition into being leader was different, though, so she couldn't compare.
The new deputy leader didn't give away whether or not she would keep her education portfolio.
Josie Pagani and Ben Thomas both believe Muller will win the emergency caucus vote.
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