The finance spokesman told Kerre McIvor you never take anything for granted, and he's humbled by the support the party's had.
"I've spent a lot of time travelling around New Zealand the past few weeks. I really felt that on the ground, people were supporting us."
Robertson is confident the party would have won the election - even without the Covid-19 pandemic.
He says the Government's been re-elected on the back of a strong first term performance.
"We managed the economy well, we were rebuilding public services, along with making sure we were laying the platform for the big infrastructure boost we needed."
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