A reduction in the voting age is unlikely to get over the line.

The Supreme Court has decided stopping 16 and 17-year-olds from voting,  is inconsistent with the Bill of Rights.

Cabinet will now draft legislation to lower the voting age, which will go to an all-of-House conscience vote with a 75 percent majority required to change the law.

Justice Minister Kiri Allan told Mike Hosking MPs will consider the issue carefully.

National and Act MPs are expected to vote down any change.

National Leader Christopher Luxon told Mike Hosking while his MPs won't be required to vote a certain way, all MPs agree they want to keep the voting age the same.

LISTEN ABOVE

• Justice Minister: Govt will give public the chance to debate voting age and have their say
• NZ could see ‘differential’ voting age system for local and general elections