The National Party says it would seek multi-party support before making any changes to the controversial electoral finance law.
Leader John Key says if the party leads the next Government it would repeal the Electoral Finance Act but not run roughshod over other parties.
The Labour-led Government has been criticised for forcing through the Electoral Finance Act when it did not have universal support within Parliament.
National has used allegations against Mr Peters over political donations to criticise both New Zealand First and Labour, however Mr Key has also spelled out that the party wants to avoid the political fallout which has dogged Labour's legislation.
Mr Key says National would seek to reach agreement with all other political parties over its wording.