As we've heard, National believes it's on to a winner for consumer choice with its new KiwiSaver policy.
The policy would roll back a number of measures brought in by Labour in order to allow people to use different providers.
National says this will also be a better use of the $100 billion fund as it currently is.
The government argues that the policy is more about removing consumer protections.
Chief executive of KiwiSaver provider Simplicity Sam Stubbs spoke to Corin Dann.
