Voters in marginal seats back the finance industry push to stop retirement savings from being raided for nation-building or home ownership, claims pollster C|T Group as it enters the fray over the purpose of the $3.3 trillion superannuation system.

The Albanese government is expected to legislate an objective for superannuation in coming months ahead of a potential crackdown on Rich Lister super accounts, with critics calling for a ban on tax concessions for balances of more than $5 million.