KEY POINTS:
The 77 coffin lids lined up alongside Mt Eden prison represent every murder victim that would be alive if Act's "three strikes you're out" policy was in place.
Figures the party obtained under the Official Information Act showed there were 77 killers serving life sentences who, when convicted, had already served at least three sentences for violence.
Act's policy is to put every offender away for 25 years to life after their third violent offence. The party's law and order spokesman, David Garrett, said this would be much more effective than National's policy of life-means-life for murderers who already have violent records.
"Sure all the scumbags that John Key cited - Antonie Dixon, William Bell and George Charlie Baker - would be locked up without parole.
"Under our policy none of them would have had the chance to kill because they would have already been in jail."
Act's policy is to cap all Government spending except on law and order, which it intends to spend up to a billion dollars a year on.
Mr Garrett said it had taken little to persuade Act's finance spokesman, Sir Roger Douglas, the money was required. "I said to [Sir Roger] 'a flat tax is no good to you if you're dead'. He seems to have taken that on board."