Labour children's spokeswoman Jacinda Ardern told Bruce that Labour would require all landlords to make rental properties warm and dry.
"This ensures that we get the benefits of a warrant of fitness without the administrative cost," she said.
Most parties, this time including the Conservatives but not the Maori Party, also supported extending paid parental leave to one year.
National has so far committed only to increasing paid leave from 14 weeks to 18 weeks by 2016, and Labour has promised to increase it to six months by 2017.
There was less support for free lunches in schools.
The National Government subsidises charities run by Fonterra, Sanitarium and KidsCan, and Labour has promised to work with community groups to ensure free food in low-decile schools, but neither major party supports extending free lunches to all schools.