KEY POINTS:
The National Party says Prime Minister Helen Clark must explain why a wealthy Labour Party supporter said she once suggested he should become a Cabinet minister.
Expatriate billionaire Owen Glenn has given hundreds of thousands of dollars to Labour's election campaign coffers.
He lives in Monaco and was in New Zealand last week at the opening of a new building named after him at Auckland University Business School.
He gave $7.5 million to the business school.
In an interview with the Dominion Post he said that in the past Helen Clark had said he would be "a sitter" for the post of transport minister.
Helen Clark said the next day "it never happened".
But National's deputy leader, Bill English, said yesterday that Helen Clark should explain herself.
Mr English said there were discrepancies between other comments by Mr Glenn about donations, and Labour's president Mike Williams.
"At the same time as the Prime Minister was pushing through the draconian Electoral Finance Act to supposedly inject more transparency into election financing, Labour appears to have done a deal to conceal support from a major donor," he said.
- NZPA