National has huge support for one of its most draconian new law and order policies - the power to keep someone in prison after serving his or her sentence if the prisoner is deemed dangerous enough.
Only 21.7 per cent of people disapprove of the policy and 72.6 per cent approve.
It is most popular among National fans, with 87 per cent of them liking it, but its support goes a lot wider.
Of the people who said they backed Labour, 58.4 per cent approved of the policy. Even Green Party supporters are fairly evenly split, with 48.3 per cent approving and 46 per cent disapproving - an indication that the Greens, a party traditionally strong on civil liberties, may be attracting a more conservative supporter.
The policy was announced on Monday last week by Corrections Minister Judith Collins, who is in line to take over the justice portfolio vacated by the retirement of Simon Power.