David Seymour wants New Zealand to recover from what he calls two lost decades.

In his state of the nation address over the weekend, he claimed not much progress was made under the Ardern, Key and Clark governments.

He pointed to the housing crisis, lagging education standards and productivity problems.

Seymour told Tim Dower infrastructure is a key part of the turnaround.

He says we need to reform regulation so things don't take so long to build.

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