Labour criticised the use by the National Party of trust funds to facilitate large anonymous donations, alleging American multi-millionaire
Julian Robertson as a contributor. Robertson, a friend of National leader
Don Brash, had connections to the Republican Party in the US. However, National Party campaign manager Steven Joyce stated, "It is possible that [Mr Robertson] made an anonymous donation. It is also possible that he may have given to one of the trusts that periodically makes donations to us but again I have no knowledge of that. They don't tell me who gives the money so I don't know."
[7] Spending outside of campaign funding limits is permitted up to three months before election date.[8]
http://en.wikipedia.org/wiki/2005_New_Zealand_election_funding_controversy