The first nationwide post- Budget HorizonPoll shows the Government would not get a mandate to make changes to KiwiSaver, sell up to 49% of state-owned energy company shares or reduce its shareholding in Air New Zealand.

It would get a mandate to make changes to the Working for Families scheme.

Some 45.8% would prefer to vote in a referendum at the November 26 general election to make their support or opposition to the proposed changes clear to the parties in the next Government. 33.6% would prefer to have the election result overall indicate their position, while 20.6% don't know.

The weighted poll of 1,154 people, conducted between 11.5am Friday May 20 and 6.30am Saturday May 21, has a maximum margin of error at a 95% confidence level of +/- 2.9%.